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Message-Id: <1475476886-26232-11-git-send-email-elena.reshetova@intel.com>
Date: Mon, 3 Oct 2016 09:41:23 +0300
From: Elena Reshetova <elena.reshetova@...el.com>
To: kernel-hardening@...ts.openwall.com
Cc: keescook@...omium.org,
David Windsor <dwindsor@...il.com>,
Hans Liljestrand <ishkamiel@...il.com>,
Elena Reshetova <elena.reshetova@...el.com>
Subject: [RFC PATCH 10/13] drivers: identify wrapping atomic usage (part 2/2)
From: David Windsor <dwindsor@...il.com>
In some cases atomic is not used for reference
counting and therefore should be allowed to overflow.
Identify such cases and make a switch to non-hardened
atomic version.
This might need more fine-grained split between
different drivers.
Signed-off-by: Hans Liljestrand <ishkamiel@...il.com>
Signed-off-by: Elena Reshetova <elena.reshetova@...el.com>
Signed-off-by: David Windsor <dwindsor@...il.com>
---
drivers/net/usb/sierra_net.c | 4 +-
drivers/net/wireless/ralink/rt2x00/rt2x00.h | 2 +-
drivers/net/wireless/ralink/rt2x00/rt2x00queue.c | 4 +-
drivers/oprofile/buffer_sync.c | 8 ++--
drivers/oprofile/event_buffer.c | 2 +-
drivers/oprofile/oprof.c | 2 +-
drivers/oprofile/oprofile_stats.c | 10 ++---
drivers/oprofile/oprofile_stats.h | 10 ++---
drivers/oprofile/oprofilefs.c | 8 ++--
drivers/regulator/core.c | 4 +-
drivers/scsi/fcoe/fcoe_sysfs.c | 12 +++---
drivers/scsi/libfc/fc_exch.c | 54 +++++++++++++-----------
drivers/scsi/lpfc/lpfc.h | 8 ++--
drivers/scsi/lpfc/lpfc_debugfs.c | 18 ++++----
drivers/scsi/lpfc/lpfc_scsi.c | 10 ++---
drivers/scsi/pmcraid.c | 24 +++++------
drivers/scsi/pmcraid.h | 8 ++--
drivers/scsi/qla4xxx/ql4_def.h | 3 +-
drivers/scsi/qla4xxx/ql4_os.c | 7 +--
drivers/scsi/scsi_lib.c | 8 ++--
drivers/scsi/scsi_sysfs.c | 2 +-
drivers/scsi/scsi_transport_fc.c | 6 +--
drivers/scsi/scsi_transport_iscsi.c | 7 +--
drivers/scsi/scsi_transport_srp.c | 6 +--
drivers/scsi/sd.c | 2 +-
drivers/target/sbp/sbp_target.c | 4 +-
drivers/tty/hvc/hvsi.c | 12 +++---
drivers/tty/hvc/hvsi_lib.c | 4 +-
drivers/tty/serial/ioc4_serial.c | 6 +--
drivers/tty/serial/msm_serial.c | 4 +-
drivers/uio/uio.c | 13 +++---
drivers/usb/core/devices.c | 6 +--
drivers/usb/core/hcd.c | 4 +-
drivers/usb/core/sysfs.c | 2 +-
drivers/usb/core/usb.c | 2 +-
drivers/usb/host/ehci-hub.c | 4 +-
drivers/usb/misc/appledisplay.c | 4 +-
drivers/usb/usbip/vhci.h | 2 +-
drivers/usb/usbip/vhci_hcd.c | 6 +--
drivers/usb/usbip/vhci_rx.c | 2 +-
drivers/usb/wusbcore/wa-hc.h | 4 +-
drivers/usb/wusbcore/wa-xfer.c | 2 +-
drivers/video/fbdev/hyperv_fb.c | 4 +-
drivers/video/fbdev/udlfb.c | 32 +++++++-------
include/linux/oprofile.h | 2 +-
include/linux/uio_driver.h | 2 +-
include/linux/usb.h | 2 +-
include/scsi/scsi_device.h | 6 +--
include/video/udlfb.h | 12 ++++--
49 files changed, 192 insertions(+), 178 deletions(-)
diff --git a/drivers/net/usb/sierra_net.c b/drivers/net/usb/sierra_net.c
index a2515887..d285128 100644
--- a/drivers/net/usb/sierra_net.c
+++ b/drivers/net/usb/sierra_net.c
@@ -51,7 +51,7 @@ static const char driver_name[] = "sierra_net";
/* atomic counter partially included in MAC address to make sure 2 devices
* do not end up with the same MAC - concept breaks in case of > 255 ifaces
*/
-static atomic_t iface_counter = ATOMIC_INIT(0);
+static atomic_wrap_t iface_counter = ATOMIC_INIT(0);
/*
* SYNC Timer Delay definition used to set the expiry time
@@ -697,7 +697,7 @@ static int sierra_net_bind(struct usbnet *dev, struct usb_interface *intf)
dev->net->netdev_ops = &sierra_net_device_ops;
/* change MAC addr to include, ifacenum, and to be unique */
- dev->net->dev_addr[ETH_ALEN-2] = atomic_inc_return(&iface_counter);
+ dev->net->dev_addr[ETH_ALEN-2] = atomic_inc_return_wrap(&iface_counter);
dev->net->dev_addr[ETH_ALEN-1] = ifacenum;
/* we will have to manufacture ethernet headers, prepare template */
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00.h b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
index f68d492..fc712ef 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
@@ -378,7 +378,7 @@ struct rt2x00_intf {
* for hardware which doesn't support hardware
* sequence counting.
*/
- atomic_t seqno;
+ atomic_wrap_t seqno;
};
static inline struct rt2x00_intf* vif_to_intf(struct ieee80211_vif *vif)
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00queue.c b/drivers/net/wireless/ralink/rt2x00/rt2x00queue.c
index 68b620b..1dfaaab 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00queue.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00queue.c
@@ -224,9 +224,9 @@ static void rt2x00queue_create_tx_descriptor_seq(struct rt2x00_dev *rt2x00dev,
* sequence counter given by mac80211.
*/
if (test_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags))
- seqno = atomic_add_return(0x10, &intf->seqno);
+ seqno = atomic_add_return_wrap(0x10, &intf->seqno);
else
- seqno = atomic_read(&intf->seqno);
+ seqno = atomic_read_wrap(&intf->seqno);
hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
hdr->seq_ctrl |= cpu_to_le16(seqno);
diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c
index 82f7000..8db7343 100644
--- a/drivers/oprofile/buffer_sync.c
+++ b/drivers/oprofile/buffer_sync.c
@@ -345,7 +345,7 @@ static void add_data(struct op_entry *entry, struct mm_struct *mm)
if (cookie == NO_COOKIE)
offset = pc;
if (cookie == INVALID_COOKIE) {
- atomic_inc(&oprofile_stats.sample_lost_no_mapping);
+ atomic_inc_wrap(&oprofile_stats.sample_lost_no_mapping);
offset = pc;
}
if (cookie != last_cookie) {
@@ -389,14 +389,14 @@ add_sample(struct mm_struct *mm, struct op_sample *s, int in_kernel)
/* add userspace sample */
if (!mm) {
- atomic_inc(&oprofile_stats.sample_lost_no_mm);
+ atomic_inc_wrap(&oprofile_stats.sample_lost_no_mm);
return 0;
}
cookie = lookup_dcookie(mm, s->eip, &offset);
if (cookie == INVALID_COOKIE) {
- atomic_inc(&oprofile_stats.sample_lost_no_mapping);
+ atomic_inc_wrap(&oprofile_stats.sample_lost_no_mapping);
return 0;
}
@@ -554,7 +554,7 @@ void sync_buffer(int cpu)
/* ignore backtraces if failed to add a sample */
if (state == sb_bt_start) {
state = sb_bt_ignore;
- atomic_inc(&oprofile_stats.bt_lost_no_mapping);
+ atomic_inc_wrap(&oprofile_stats.bt_lost_no_mapping);
}
}
release_mm(mm);
diff --git a/drivers/oprofile/event_buffer.c b/drivers/oprofile/event_buffer.c
index c0cc4e7..56909b8 100644
--- a/drivers/oprofile/event_buffer.c
+++ b/drivers/oprofile/event_buffer.c
@@ -53,7 +53,7 @@ void add_event_entry(unsigned long value)
}
if (buffer_pos == buffer_size) {
- atomic_inc(&oprofile_stats.event_lost_overflow);
+ atomic_inc_wrap(&oprofile_stats.event_lost_overflow);
return;
}
diff --git a/drivers/oprofile/oprof.c b/drivers/oprofile/oprof.c
index ed2c3ec..d0c9ef4 100644
--- a/drivers/oprofile/oprof.c
+++ b/drivers/oprofile/oprof.c
@@ -110,7 +110,7 @@ static void switch_worker(struct work_struct *work)
if (oprofile_ops.switch_events())
return;
- atomic_inc(&oprofile_stats.multiplex_counter);
+ atomic_inc_wrap(&oprofile_stats.multiplex_counter);
start_switch_worker();
}
diff --git a/drivers/oprofile/oprofile_stats.c b/drivers/oprofile/oprofile_stats.c
index 59659ce..e7f2a16d 100644
--- a/drivers/oprofile/oprofile_stats.c
+++ b/drivers/oprofile/oprofile_stats.c
@@ -30,11 +30,11 @@ void oprofile_reset_stats(void)
cpu_buf->sample_invalid_eip = 0;
}
- atomic_set(&oprofile_stats.sample_lost_no_mm, 0);
- atomic_set(&oprofile_stats.sample_lost_no_mapping, 0);
- atomic_set(&oprofile_stats.event_lost_overflow, 0);
- atomic_set(&oprofile_stats.bt_lost_no_mapping, 0);
- atomic_set(&oprofile_stats.multiplex_counter, 0);
+ atomic_set_wrap(&oprofile_stats.sample_lost_no_mm, 0);
+ atomic_set_wrap(&oprofile_stats.sample_lost_no_mapping, 0);
+ atomic_set_wrap(&oprofile_stats.event_lost_overflow, 0);
+ atomic_set_wrap(&oprofile_stats.bt_lost_no_mapping, 0);
+ atomic_set_wrap(&oprofile_stats.multiplex_counter, 0);
}
diff --git a/drivers/oprofile/oprofile_stats.h b/drivers/oprofile/oprofile_stats.h
index 1fc622b..f464cf6 100644
--- a/drivers/oprofile/oprofile_stats.h
+++ b/drivers/oprofile/oprofile_stats.h
@@ -13,11 +13,11 @@
#include <linux/atomic.h>
struct oprofile_stat_struct {
- atomic_t sample_lost_no_mm;
- atomic_t sample_lost_no_mapping;
- atomic_t bt_lost_no_mapping;
- atomic_t event_lost_overflow;
- atomic_t multiplex_counter;
+ atomic_wrap_t sample_lost_no_mm;
+ atomic_wrap_t sample_lost_no_mapping;
+ atomic_wrap_t bt_lost_no_mapping;
+ atomic_wrap_t event_lost_overflow;
+ atomic_wrap_t multiplex_counter;
};
extern struct oprofile_stat_struct oprofile_stats;
diff --git a/drivers/oprofile/oprofilefs.c b/drivers/oprofile/oprofilefs.c
index a0e5260..17d01bd 100644
--- a/drivers/oprofile/oprofilefs.c
+++ b/drivers/oprofile/oprofilefs.c
@@ -176,8 +176,10 @@ int oprofilefs_create_ro_ulong(struct dentry *root,
static ssize_t atomic_read_file(struct file *file, char __user *buf, size_t count, loff_t *offset)
{
- atomic_t *val = file->private_data;
- return oprofilefs_ulong_to_user(atomic_read(val), buf, count, offset);
+ atomic_wrap_t *val = file->private_data;
+
+ return oprofilefs_ulong_to_user(atomic_read_wrap(val),
+ buf, count, offset);
}
@@ -189,7 +191,7 @@ static const struct file_operations atomic_ro_fops = {
int oprofilefs_create_ro_atomic(struct dentry *root,
- char const *name, atomic_t *val)
+ char const *name, atomic_wrap_t *val)
{
return __oprofilefs_create_file(root, name,
&atomic_ro_fops, 0444, val);
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 67426c0..443c4bb 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -3916,7 +3916,7 @@ regulator_register(const struct regulator_desc *regulator_desc,
const struct regulation_constraints *constraints = NULL;
const struct regulator_init_data *init_data;
struct regulator_config *config = NULL;
- static atomic_t regulator_no = ATOMIC_INIT(-1);
+ static atomic_wrap_t regulator_no = ATOMIC_INIT(-1);
struct regulator_dev *rdev;
struct device *dev;
int ret, i;
@@ -4009,7 +4009,7 @@ regulator_register(const struct regulator_desc *regulator_desc,
rdev->dev.class = ®ulator_class;
rdev->dev.parent = dev;
dev_set_name(&rdev->dev, "regulator.%lu",
- (unsigned long) atomic_inc_return(®ulator_no));
+ (unsigned long) atomic_inc_return_wrap(®ulator_no));
/* set regulator constraints */
if (init_data)
diff --git a/drivers/scsi/fcoe/fcoe_sysfs.c b/drivers/scsi/fcoe/fcoe_sysfs.c
index 0675fd1..4c39c9a 100644
--- a/drivers/scsi/fcoe/fcoe_sysfs.c
+++ b/drivers/scsi/fcoe/fcoe_sysfs.c
@@ -33,8 +33,8 @@
*/
#include "libfcoe.h"
-static atomic_t ctlr_num;
-static atomic_t fcf_num;
+static atomic_wrap_t ctlr_num;
+static atomic_wrap_t fcf_num;
/*
* fcoe_fcf_dev_loss_tmo: the default number of seconds that fcoe sysfs
@@ -724,7 +724,7 @@ struct fcoe_ctlr_device *fcoe_ctlr_device_add(struct device *parent,
if (!ctlr)
goto out;
- ctlr->id = atomic_inc_return(&ctlr_num) - 1;
+ ctlr->id = atomic_inc_return_wrap(&ctlr_num) - 1;
ctlr->f = f;
ctlr->mode = FIP_CONN_TYPE_FABRIC;
INIT_LIST_HEAD(&ctlr->fcfs);
@@ -941,7 +941,7 @@ struct fcoe_fcf_device *fcoe_fcf_device_add(struct fcoe_ctlr_device *ctlr,
fcf->dev.parent = &ctlr->dev;
fcf->dev.bus = &fcoe_bus_type;
fcf->dev.type = &fcoe_fcf_device_type;
- fcf->id = atomic_inc_return(&fcf_num) - 1;
+ fcf->id = atomic_inc_return_wrap(&fcf_num) - 1;
fcf->state = FCOE_FCF_STATE_UNKNOWN;
fcf->dev_loss_tmo = ctlr->fcf_dev_loss_tmo;
@@ -977,8 +977,8 @@ int __init fcoe_sysfs_setup(void)
{
int error;
- atomic_set(&ctlr_num, 0);
- atomic_set(&fcf_num, 0);
+ atomic_set_wrap(&ctlr_num, 0);
+ atomic_set_wrap(&fcf_num, 0);
error = bus_register(&fcoe_bus_type);
if (error)
diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c
index 16ca31a..311481b 100644
--- a/drivers/scsi/libfc/fc_exch.c
+++ b/drivers/scsi/libfc/fc_exch.c
@@ -101,12 +101,12 @@ struct fc_exch_mgr {
u16 pool_max_index;
struct {
- atomic_t no_free_exch;
- atomic_t no_free_exch_xid;
- atomic_t xid_not_found;
- atomic_t xid_busy;
- atomic_t seq_not_found;
- atomic_t non_bls_resp;
+ atomic_wrap_t no_free_exch;
+ atomic_wrap_t no_free_exch_xid;
+ atomic_wrap_t xid_not_found;
+ atomic_wrap_t xid_busy;
+ atomic_wrap_t seq_not_found;
+ atomic_wrap_t non_bls_resp;
} stats;
};
@@ -809,7 +809,7 @@ static struct fc_exch *fc_exch_em_alloc(struct fc_lport *lport,
/* allocate memory for exchange */
ep = mempool_alloc(mp->ep_pool, GFP_ATOMIC);
if (!ep) {
- atomic_inc(&mp->stats.no_free_exch);
+ atomic_inc_wrap(&mp->stats.no_free_exch);
goto out;
}
memset(ep, 0, sizeof(*ep));
@@ -872,7 +872,7 @@ static struct fc_exch *fc_exch_em_alloc(struct fc_lport *lport,
return ep;
err:
spin_unlock_bh(&pool->lock);
- atomic_inc(&mp->stats.no_free_exch_xid);
+ atomic_inc_wrap(&mp->stats.no_free_exch_xid);
mempool_free(ep, mp->ep_pool);
return NULL;
}
@@ -1029,7 +1029,7 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport,
xid = ntohs(fh->fh_ox_id); /* we originated exch */
ep = fc_exch_find(mp, xid);
if (!ep) {
- atomic_inc(&mp->stats.xid_not_found);
+ atomic_inc_wrap(&mp->stats.xid_not_found);
reject = FC_RJT_OX_ID;
goto out;
}
@@ -1059,7 +1059,7 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport,
ep = fc_exch_find(mp, xid);
if ((f_ctl & FC_FC_FIRST_SEQ) && fc_sof_is_init(fr_sof(fp))) {
if (ep) {
- atomic_inc(&mp->stats.xid_busy);
+ atomic_inc_wrap(&mp->stats.xid_busy);
reject = FC_RJT_RX_ID;
goto rel;
}
@@ -1070,7 +1070,7 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport,
}
xid = ep->xid; /* get our XID */
} else if (!ep) {
- atomic_inc(&mp->stats.xid_not_found);
+ atomic_inc_wrap(&mp->stats.xid_not_found);
reject = FC_RJT_RX_ID; /* XID not found */
goto out;
}
@@ -1088,7 +1088,7 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport,
} else {
sp = &ep->seq;
if (sp->id != fh->fh_seq_id) {
- atomic_inc(&mp->stats.seq_not_found);
+ atomic_inc_wrap(&mp->stats.seq_not_found);
if (f_ctl & FC_FC_END_SEQ) {
/*
* Update sequence_id based on incoming last
@@ -1539,22 +1539,22 @@ static void fc_exch_recv_seq_resp(struct fc_exch_mgr *mp, struct fc_frame *fp)
ep = fc_exch_find(mp, ntohs(fh->fh_ox_id));
if (!ep) {
- atomic_inc(&mp->stats.xid_not_found);
+ atomic_inc_wrap(&mp->stats.xid_not_found);
goto out;
}
if (ep->esb_stat & ESB_ST_COMPLETE) {
- atomic_inc(&mp->stats.xid_not_found);
+ atomic_inc_wrap(&mp->stats.xid_not_found);
goto rel;
}
if (ep->rxid == FC_XID_UNKNOWN)
ep->rxid = ntohs(fh->fh_rx_id);
if (ep->sid != 0 && ep->sid != ntoh24(fh->fh_d_id)) {
- atomic_inc(&mp->stats.xid_not_found);
+ atomic_inc_wrap(&mp->stats.xid_not_found);
goto rel;
}
if (ep->did != ntoh24(fh->fh_s_id) &&
ep->did != FC_FID_FLOGI) {
- atomic_inc(&mp->stats.xid_not_found);
+ atomic_inc_wrap(&mp->stats.xid_not_found);
goto rel;
}
sof = fr_sof(fp);
@@ -1563,7 +1563,7 @@ static void fc_exch_recv_seq_resp(struct fc_exch_mgr *mp, struct fc_frame *fp)
sp->ssb_stat |= SSB_ST_RESP;
sp->id = fh->fh_seq_id;
} else if (sp->id != fh->fh_seq_id) {
- atomic_inc(&mp->stats.seq_not_found);
+ atomic_inc_wrap(&mp->stats.seq_not_found);
goto rel;
}
@@ -1626,9 +1626,9 @@ static void fc_exch_recv_resp(struct fc_exch_mgr *mp, struct fc_frame *fp)
sp = fc_seq_lookup_orig(mp, fp); /* doesn't hold sequence */
if (!sp)
- atomic_inc(&mp->stats.xid_not_found);
+ atomic_inc_wrap(&mp->stats.xid_not_found);
else
- atomic_inc(&mp->stats.non_bls_resp);
+ atomic_inc_wrap(&mp->stats.non_bls_resp);
fc_frame_free(fp);
}
@@ -2268,13 +2268,17 @@ void fc_exch_update_stats(struct fc_lport *lport)
list_for_each_entry(ema, &lport->ema_list, ema_list) {
mp = ema->mp;
- st->fc_no_free_exch += atomic_read(&mp->stats.no_free_exch);
+ st->fc_no_free_exch +=
+ atomic_read_wrap(&mp->stats.no_free_exch);
st->fc_no_free_exch_xid +=
- atomic_read(&mp->stats.no_free_exch_xid);
- st->fc_xid_not_found += atomic_read(&mp->stats.xid_not_found);
- st->fc_xid_busy += atomic_read(&mp->stats.xid_busy);
- st->fc_seq_not_found += atomic_read(&mp->stats.seq_not_found);
- st->fc_non_bls_resp += atomic_read(&mp->stats.non_bls_resp);
+ atomic_read_wrap(&mp->stats.no_free_exch_xid);
+ st->fc_xid_not_found +=
+ atomic_read_wrap(&mp->stats.xid_not_found);
+ st->fc_xid_busy += atomic_read_wrap(&mp->stats.xid_busy);
+ st->fc_seq_not_found +=
+ atomic_read_wrap(&mp->stats.seq_not_found);
+ st->fc_non_bls_resp +=
+ atomic_read_wrap(&mp->stats.non_bls_resp);
}
}
EXPORT_SYMBOL(fc_exch_update_stats);
diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
index b484859..efce99f 100644
--- a/drivers/scsi/lpfc/lpfc.h
+++ b/drivers/scsi/lpfc/lpfc.h
@@ -430,7 +430,7 @@ struct lpfc_vport {
struct dentry *debug_nodelist;
struct dentry *vport_debugfs_root;
struct lpfc_debugfs_trc *disc_trc;
- atomic_t disc_trc_cnt;
+ atomic_wrap_t disc_trc_cnt;
#endif
uint8_t stat_data_enabled;
uint8_t stat_data_blocked;
@@ -898,8 +898,8 @@ struct lpfc_hba {
struct timer_list fabric_block_timer;
unsigned long bit_flags;
#define FABRIC_COMANDS_BLOCKED 0
- atomic_t num_rsrc_err;
- atomic_t num_cmd_success;
+ atomic_wrap_t num_rsrc_err;
+ atomic_wrap_t num_cmd_success;
unsigned long last_rsrc_error_time;
unsigned long last_ramp_down_time;
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
@@ -934,7 +934,7 @@ struct lpfc_hba {
struct dentry *debug_slow_ring_trc;
struct lpfc_debugfs_trc *slow_ring_trc;
- atomic_t slow_ring_trc_cnt;
+ atomic_wrap_t slow_ring_trc_cnt;
/* iDiag debugfs sub-directory */
struct dentry *idiag_root;
struct dentry *idiag_pci_cfg;
diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c
index a63542b..1059d95 100644
--- a/drivers/scsi/lpfc/lpfc_debugfs.c
+++ b/drivers/scsi/lpfc/lpfc_debugfs.c
@@ -106,7 +106,7 @@ MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc,
#include <linux/debugfs.h>
-static atomic_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0);
+static atomic_wrap_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0);
static unsigned long lpfc_debugfs_start_time = 0L;
/* iDiag */
@@ -147,7 +147,7 @@ lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size)
lpfc_debugfs_enable = 0;
len = 0;
- index = (atomic_read(&vport->disc_trc_cnt) + 1) &
+ index = (atomic_read_wrap(&vport->disc_trc_cnt) + 1) &
(lpfc_debugfs_max_disc_trc - 1);
for (i = index; i < lpfc_debugfs_max_disc_trc; i++) {
dtp = vport->disc_trc + i;
@@ -213,7 +213,7 @@ lpfc_debugfs_slow_ring_trc_data(struct lpfc_hba *phba, char *buf, int size)
lpfc_debugfs_enable = 0;
len = 0;
- index = (atomic_read(&phba->slow_ring_trc_cnt) + 1) &
+ index = (atomic_read_wrap(&phba->slow_ring_trc_cnt) + 1) &
(lpfc_debugfs_max_slow_ring_trc - 1);
for (i = index; i < lpfc_debugfs_max_slow_ring_trc; i++) {
dtp = phba->slow_ring_trc + i;
@@ -646,14 +646,14 @@ lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt,
!vport || !vport->disc_trc)
return;
- index = atomic_inc_return(&vport->disc_trc_cnt) &
+ index = atomic_inc_return_wrap(&vport->disc_trc_cnt) &
(lpfc_debugfs_max_disc_trc - 1);
dtp = vport->disc_trc + index;
dtp->fmt = fmt;
dtp->data1 = data1;
dtp->data2 = data2;
dtp->data3 = data3;
- dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
+ dtp->seq_cnt = atomic_inc_return_wrap(&lpfc_debugfs_seq_trc_cnt);
dtp->jif = jiffies;
#endif
return;
@@ -684,14 +684,14 @@ lpfc_debugfs_slow_ring_trc(struct lpfc_hba *phba, char *fmt,
!phba || !phba->slow_ring_trc)
return;
- index = atomic_inc_return(&phba->slow_ring_trc_cnt) &
+ index = atomic_inc_return_wrap(&phba->slow_ring_trc_cnt) &
(lpfc_debugfs_max_slow_ring_trc - 1);
dtp = phba->slow_ring_trc + index;
dtp->fmt = fmt;
dtp->data1 = data1;
dtp->data2 = data2;
dtp->data3 = data3;
- dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
+ dtp->seq_cnt = atomic_inc_return_wrap(&lpfc_debugfs_seq_trc_cnt);
dtp->jif = jiffies;
#endif
return;
@@ -4268,7 +4268,7 @@ lpfc_debugfs_initialize(struct lpfc_vport *vport)
"slow_ring buffer\n");
goto debug_failed;
}
- atomic_set(&phba->slow_ring_trc_cnt, 0);
+ atomic_set_wrap(&phba->slow_ring_trc_cnt, 0);
memset(phba->slow_ring_trc, 0,
(sizeof(struct lpfc_debugfs_trc) *
lpfc_debugfs_max_slow_ring_trc));
@@ -4314,7 +4314,7 @@ lpfc_debugfs_initialize(struct lpfc_vport *vport)
"buffer\n");
goto debug_failed;
}
- atomic_set(&vport->disc_trc_cnt, 0);
+ atomic_set_wrap(&vport->disc_trc_cnt, 0);
snprintf(name, sizeof(name), "discovery_trace");
vport->debug_disc_trc =
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index d197aa1..2fb02ef 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -261,7 +261,7 @@ lpfc_rampdown_queue_depth(struct lpfc_hba *phba)
unsigned long expires;
spin_lock_irqsave(&phba->hbalock, flags);
- atomic_inc(&phba->num_rsrc_err);
+ atomic_inc_wrap(&phba->num_rsrc_err);
phba->last_rsrc_error_time = jiffies;
expires = phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL;
@@ -303,8 +303,8 @@ lpfc_ramp_down_queue_handler(struct lpfc_hba *phba)
unsigned long num_rsrc_err, num_cmd_success;
int i;
- num_rsrc_err = atomic_read(&phba->num_rsrc_err);
- num_cmd_success = atomic_read(&phba->num_cmd_success);
+ num_rsrc_err = atomic_read_wrap(&phba->num_rsrc_err);
+ num_cmd_success = atomic_read_wrap(&phba->num_cmd_success);
/*
* The error and success command counters are global per
@@ -331,8 +331,8 @@ lpfc_ramp_down_queue_handler(struct lpfc_hba *phba)
}
}
lpfc_destroy_vport_work_array(phba, vports);
- atomic_set(&phba->num_rsrc_err, 0);
- atomic_set(&phba->num_cmd_success, 0);
+ atomic_set_wrap(&phba->num_rsrc_err, 0);
+ atomic_set_wrap(&phba->num_cmd_success, 0);
}
/**
diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
index 68a5c34..265a755 100644
--- a/drivers/scsi/pmcraid.c
+++ b/drivers/scsi/pmcraid.c
@@ -201,8 +201,8 @@ static int pmcraid_slave_alloc(struct scsi_device *scsi_dev)
res->scsi_dev = scsi_dev;
scsi_dev->hostdata = res;
res->change_detected = 0;
- atomic_set(&res->read_failures, 0);
- atomic_set(&res->write_failures, 0);
+ atomic_set_wrap(&res->read_failures, 0);
+ atomic_set_wrap(&res->write_failures, 0);
rc = 0;
}
spin_unlock_irqrestore(&pinstance->resource_lock, lock_flags);
@@ -2641,9 +2641,9 @@ static int pmcraid_error_handler(struct pmcraid_cmd *cmd)
/* If this was a SCSI read/write command keep count of errors */
if (SCSI_CMD_TYPE(scsi_cmd->cmnd[0]) == SCSI_READ_CMD)
- atomic_inc(&res->read_failures);
+ atomic_inc_wrap(&res->read_failures);
else if (SCSI_CMD_TYPE(scsi_cmd->cmnd[0]) == SCSI_WRITE_CMD)
- atomic_inc(&res->write_failures);
+ atomic_inc_wrap(&res->write_failures);
if (!RES_IS_GSCSI(res->cfg_entry) &&
masked_ioasc != PMCRAID_IOASC_HW_DEVICE_BUS_STATUS_ERROR) {
@@ -3469,8 +3469,8 @@ static int pmcraid_queuecommand_lck(
* block of scsi_cmd which is re-used (e.g. cancel/abort), which uses
* hrrq_id assigned here in queuecommand
*/
- ioarcb->hrrq_id = atomic_add_return(1, &(pinstance->last_message_id)) %
- pinstance->num_hrrq;
+ ioarcb->hrrq_id = atomic_add_return_wrap(1,
+ &(pinstance->last_message_id)) % pinstance->num_hrrq;
cmd->cmd_done = pmcraid_io_done;
if (RES_IS_GSCSI(res->cfg_entry) || RES_IS_VSET(res->cfg_entry)) {
@@ -3783,8 +3783,8 @@ static long pmcraid_ioctl_passthrough(
* block of scsi_cmd which is re-used (e.g. cancel/abort), which uses
* hrrq_id assigned here in queuecommand
*/
- ioarcb->hrrq_id = atomic_add_return(1, &(pinstance->last_message_id)) %
- pinstance->num_hrrq;
+ ioarcb->hrrq_id = atomic_add_return_wrap(1,
+ &(pinstance->last_message_id)) % pinstance->num_hrrq;
if (request_size) {
rc = pmcraid_build_passthrough_ioadls(cmd,
@@ -4420,7 +4420,7 @@ static void pmcraid_worker_function(struct work_struct *workp)
pinstance = container_of(workp, struct pmcraid_instance, worker_q);
/* add resources only after host is added into system */
- if (!atomic_read(&pinstance->expose_resources))
+ if (!atomic_read_wrap(&pinstance->expose_resources))
return;
fw_version = be16_to_cpu(pinstance->inq_data->fw_version);
@@ -5237,8 +5237,8 @@ static int pmcraid_init_instance(struct pci_dev *pdev, struct Scsi_Host *host,
init_waitqueue_head(&pinstance->reset_wait_q);
atomic_set(&pinstance->outstanding_cmds, 0);
- atomic_set(&pinstance->last_message_id, 0);
- atomic_set(&pinstance->expose_resources, 0);
+ atomic_set_wrap(&pinstance->last_message_id, 0);
+ atomic_set_wrap(&pinstance->expose_resources, 0);
INIT_LIST_HEAD(&pinstance->free_res_q);
INIT_LIST_HEAD(&pinstance->used_res_q);
@@ -5949,7 +5949,7 @@ static int pmcraid_probe(struct pci_dev *pdev,
/* Schedule worker thread to handle CCN and take care of adding and
* removing devices to OS
*/
- atomic_set(&pinstance->expose_resources, 1);
+ atomic_set_wrap(&pinstance->expose_resources, 1);
schedule_work(&pinstance->worker_q);
return rc;
diff --git a/drivers/scsi/pmcraid.h b/drivers/scsi/pmcraid.h
index e1d150f..68e28d2 100644
--- a/drivers/scsi/pmcraid.h
+++ b/drivers/scsi/pmcraid.h
@@ -748,7 +748,7 @@ struct pmcraid_instance {
struct pmcraid_isr_param hrrq_vector[PMCRAID_NUM_MSIX_VECTORS];
/* Message id as filled in last fired IOARCB, used to identify HRRQ */
- atomic_t last_message_id;
+ atomic_wrap_t last_message_id;
/* configuration table */
struct pmcraid_config_table *cfg_table;
@@ -777,7 +777,7 @@ struct pmcraid_instance {
atomic_t outstanding_cmds;
/* should add/delete resources to mid-layer now ?*/
- atomic_t expose_resources;
+ atomic_wrap_t expose_resources;
@@ -813,8 +813,8 @@ struct pmcraid_resource_entry {
struct pmcraid_config_table_entry_ext cfg_entry_ext;
};
struct scsi_device *scsi_dev; /* Link scsi_device structure */
- atomic_t read_failures; /* count of failed READ commands */
- atomic_t write_failures; /* count of failed WRITE commands */
+ atomic_wrap_t read_failures; /* count of failed READ commands */
+ atomic_wrap_t write_failures; /* count of failed WRITE commands */
/* To indicate add/delete/modify during CCN */
u8 change_detected;
diff --git a/drivers/scsi/qla4xxx/ql4_def.h b/drivers/scsi/qla4xxx/ql4_def.h
index a7cfc27..92998fc 100644
--- a/drivers/scsi/qla4xxx/ql4_def.h
+++ b/drivers/scsi/qla4xxx/ql4_def.h
@@ -306,7 +306,8 @@ struct ddb_entry {
* (4000 only) */
atomic_t relogin_timer; /* Max Time to wait for
* relogin to complete */
- atomic_t relogin_retry_count; /* Num of times relogin has been
+ atomic_wrap_t relogin_retry_count;
+ /* Num of times relogin has been
* retried */
uint32_t default_time2wait; /* Default Min time between
* relogins (+aens) */
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index 01c3610..df2ec0e 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -4490,12 +4490,13 @@ static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
*/
if (!iscsi_is_session_online(cls_sess)) {
/* Reset retry relogin timer */
- atomic_inc(&ddb_entry->relogin_retry_count);
+ atomic_inc_wrap(&ddb_entry->relogin_retry_count);
DEBUG2(ql4_printk(KERN_INFO, ha,
"%s: index[%d] relogin timed out-retrying"
" relogin (%d), retry (%d)\n", __func__,
ddb_entry->fw_ddb_index,
- atomic_read(&ddb_entry->relogin_retry_count),
+ atomic_read_wrap(&ddb_entry->
+ relogin_retry_count),
ddb_entry->default_time2wait + 4));
set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
atomic_set(&ddb_entry->retry_relogin_timer,
@@ -6603,7 +6604,7 @@ static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
atomic_set(&ddb_entry->relogin_timer, 0);
- atomic_set(&ddb_entry->relogin_retry_count, 0);
+ atomic_set_wrap(&ddb_entry->relogin_retry_count, 0);
def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
ddb_entry->default_relogin_timeout =
(def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 2cca9cf..da9fd24 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1513,7 +1513,7 @@ static void scsi_kill_request(struct request *req, struct request_queue *q)
shost = sdev->host;
scsi_init_cmd_errh(cmd);
cmd->result = DID_NO_CONNECT << 16;
- atomic_inc(&cmd->device->iorequest_cnt);
+ atomic_inc_wrap(&cmd->device->iorequest_cnt);
/*
* SCSI request completion path will do scsi_device_unbusy(),
@@ -1536,9 +1536,9 @@ static void scsi_softirq_done(struct request *rq)
INIT_LIST_HEAD(&cmd->eh_entry);
- atomic_inc(&cmd->device->iodone_cnt);
+ atomic_inc_wrap(&cmd->device->iodone_cnt);
if (cmd->result)
- atomic_inc(&cmd->device->ioerr_cnt);
+ atomic_inc_wrap(&cmd->device->ioerr_cnt);
disposition = scsi_decide_disposition(cmd);
if (disposition != SUCCESS &&
@@ -1579,7 +1579,7 @@ static int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
struct Scsi_Host *host = cmd->device->host;
int rtn = 0;
- atomic_inc(&cmd->device->iorequest_cnt);
+ atomic_inc_wrap(&cmd->device->iorequest_cnt);
/* check if the device is still usable */
if (unlikely(cmd->device->sdev_state == SDEV_DEL)) {
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 0734927..92710f3 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -848,7 +848,7 @@ show_iostat_##field(struct device *dev, struct device_attribute *attr, \
char *buf) \
{ \
struct scsi_device *sdev = to_scsi_device(dev); \
- unsigned long long count = atomic_read(&sdev->field); \
+ unsigned long long count = atomic_read_wrap(&sdev->field); \
return snprintf(buf, 20, "0x%llx\n", count); \
} \
static DEVICE_ATTR(field, S_IRUGO, show_iostat_##field, NULL)
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index 0f3a386..c571cfa 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -502,7 +502,7 @@ static DECLARE_TRANSPORT_CLASS(fc_vport_class,
* Netlink Infrastructure
*/
-static atomic_t fc_event_seq;
+static atomic_wrap_t fc_event_seq;
/**
* fc_get_event_number - Obtain the next sequential FC event number
@@ -515,7 +515,7 @@ static atomic_t fc_event_seq;
u32
fc_get_event_number(void)
{
- return atomic_add_return(1, &fc_event_seq);
+ return atomic_add_return_wrap(1, &fc_event_seq);
}
EXPORT_SYMBOL(fc_get_event_number);
@@ -659,7 +659,7 @@ static __init int fc_transport_init(void)
{
int error;
- atomic_set(&fc_event_seq, 0);
+ atomic_set_wrap(&fc_event_seq, 0);
error = transport_class_register(&fc_host_class);
if (error)
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 42bca61..fda2eb6 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -79,7 +79,8 @@ struct iscsi_internal {
struct transport_container session_cont;
};
-static atomic_t iscsi_session_nr; /* sysfs session id for next new session */
+static atomic_wrap_t iscsi_session_nr;
+ /* sysfs session id for next new session */
static struct workqueue_struct *iscsi_eh_timer_workq;
static DEFINE_IDA(iscsi_sess_ida);
@@ -2073,7 +2074,7 @@ int iscsi_add_session(struct iscsi_cls_session *session, unsigned int target_id)
int id = 0;
int err;
- session->sid = atomic_add_return(1, &iscsi_session_nr);
+ session->sid = atomic_add_return_wrap(1, &iscsi_session_nr);
if (target_id == ISCSI_MAX_TARGET) {
id = ida_simple_get(&iscsi_sess_ida, 0, 0, GFP_KERNEL);
@@ -4523,7 +4524,7 @@ static __init int iscsi_transport_init(void)
printk(KERN_INFO "Loading iSCSI transport class v%s.\n",
ISCSI_TRANSPORT_VERSION);
- atomic_set(&iscsi_session_nr, 0);
+ atomic_set_wrap(&iscsi_session_nr, 0);
err = class_register(&iscsi_transport_class);
if (err)
diff --git a/drivers/scsi/scsi_transport_srp.c b/drivers/scsi/scsi_transport_srp.c
index e3cd3ec..f6ec5f9 100644
--- a/drivers/scsi/scsi_transport_srp.c
+++ b/drivers/scsi/scsi_transport_srp.c
@@ -35,7 +35,7 @@
#include "scsi_priv.h"
struct srp_host_attrs {
- atomic_t next_port_id;
+ atomic_wrap_t next_port_id;
};
#define to_srp_host_attrs(host) ((struct srp_host_attrs *)(host)->shost_data)
@@ -105,7 +105,7 @@ static int srp_host_setup(struct transport_container *tc, struct device *dev,
struct Scsi_Host *shost = dev_to_shost(dev);
struct srp_host_attrs *srp_host = to_srp_host_attrs(shost);
- atomic_set(&srp_host->next_port_id, 0);
+ atomic_set_wrap(&srp_host->next_port_id, 0);
return 0;
}
@@ -752,7 +752,7 @@ struct srp_rport *srp_rport_add(struct Scsi_Host *shost,
rport_fast_io_fail_timedout);
INIT_DELAYED_WORK(&rport->dev_loss_work, rport_dev_loss_timedout);
- id = atomic_inc_return(&to_srp_host_attrs(shost)->next_port_id);
+ id = atomic_inc_return_wrap(&to_srp_host_attrs(shost)->next_port_id);
dev_set_name(&rport->dev, "port-%d:%d", shost->host_no, id);
transport_setup_device(&rport->dev);
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 51e5629..ad79801 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -3081,7 +3081,7 @@ static int sd_probe(struct device *dev)
sdkp->disk = gd;
sdkp->index = index;
atomic_set(&sdkp->openers, 0);
- atomic_set(&sdkp->device->ioerr_cnt, 0);
+ atomic_set_wrap(&sdkp->device->ioerr_cnt, 0);
if (!sdp->request_queue->rq_timeout) {
if (sdp->type != TYPE_MOD)
diff --git a/drivers/target/sbp/sbp_target.c b/drivers/target/sbp/sbp_target.c
index 58bb6ed..3e0a1ee 100644
--- a/drivers/target/sbp/sbp_target.c
+++ b/drivers/target/sbp/sbp_target.c
@@ -56,7 +56,7 @@ static const u32 sbp_unit_directory_template[] = {
#define SESSION_MAINTENANCE_INTERVAL HZ
-static atomic_t login_id = ATOMIC_INIT(0);
+static atomic_wrap_t login_id = ATOMIC_INIT(0);
static void session_maintenance_work(struct work_struct *);
static int sbp_run_transaction(struct fw_card *, int, int, int, int,
@@ -422,7 +422,7 @@ static void sbp_management_request_login(
login->login_lun = unpacked_lun;
login->status_fifo_addr = sbp2_pointer_to_addr(&req->orb.status_fifo);
login->exclusive = LOGIN_ORB_EXCLUSIVE(be32_to_cpu(req->orb.misc));
- login->login_id = atomic_inc_return(&login_id);
+ login->login_id = atomic_inc_return_wrap(&login_id);
login->tgt_agt = sbp_target_agent_register(login);
if (IS_ERR(login->tgt_agt)) {
diff --git a/drivers/tty/hvc/hvsi.c b/drivers/tty/hvc/hvsi.c
index 96ce6bd..c05b32e 100644
--- a/drivers/tty/hvc/hvsi.c
+++ b/drivers/tty/hvc/hvsi.c
@@ -85,7 +85,7 @@ struct hvsi_struct {
int n_outbuf;
uint32_t vtermno;
uint32_t virq;
- atomic_t seqno; /* HVSI packet sequence number */
+ atomic_wrap_t seqno; /* HVSI packet sequence number */
uint16_t mctrl;
uint8_t state; /* HVSI protocol state */
uint8_t flags;
@@ -297,7 +297,7 @@ static int hvsi_version_respond(struct hvsi_struct *hp, uint16_t query_seqno)
packet.hdr.type = VS_QUERY_RESPONSE_PACKET_HEADER;
packet.hdr.len = sizeof(struct hvsi_query_response);
- packet.hdr.seqno = cpu_to_be16(atomic_inc_return(&hp->seqno));
+ packet.hdr.seqno = cpu_to_be16(atomic_inc_return_wrap(&hp->seqno));
packet.verb = cpu_to_be16(VSV_SEND_VERSION_NUMBER);
packet.u.version = HVSI_VERSION;
packet.query_seqno = cpu_to_be16(query_seqno+1);
@@ -557,7 +557,7 @@ static int hvsi_query(struct hvsi_struct *hp, uint16_t verb)
packet.hdr.type = VS_QUERY_PACKET_HEADER;
packet.hdr.len = sizeof(struct hvsi_query);
- packet.hdr.seqno = cpu_to_be16(atomic_inc_return(&hp->seqno));
+ packet.hdr.seqno = cpu_to_be16(atomic_inc_return_wrap(&hp->seqno));
packet.verb = cpu_to_be16(verb);
pr_debug("%s: sending %i bytes\n", __func__, packet.hdr.len);
@@ -599,7 +599,7 @@ static int hvsi_set_mctrl(struct hvsi_struct *hp, uint16_t mctrl)
int wrote;
packet.hdr.type = VS_CONTROL_PACKET_HEADER;
- packet.hdr.seqno = cpu_to_be16(atomic_inc_return(&hp->seqno));
+ packet.hdr.seqno = cpu_to_be16(atomic_inc_return_wrap(&hp->seqno));
packet.hdr.len = sizeof(struct hvsi_control);
packet.verb = cpu_to_be16(VSV_SET_MODEM_CTL);
packet.mask = cpu_to_be32(HVSI_TSDTR);
@@ -682,7 +682,7 @@ static int hvsi_put_chars(struct hvsi_struct *hp, const char *buf, int count)
BUG_ON(count > HVSI_MAX_OUTGOING_DATA);
packet.hdr.type = VS_DATA_PACKET_HEADER;
- packet.hdr.seqno = cpu_to_be16(atomic_inc_return(&hp->seqno));
+ packet.hdr.seqno = cpu_to_be16(atomic_inc_return_wrap(&hp->seqno));
packet.hdr.len = count + sizeof(struct hvsi_header);
memcpy(&packet.data, buf, count);
@@ -699,7 +699,7 @@ static void hvsi_close_protocol(struct hvsi_struct *hp)
struct hvsi_control packet __ALIGNED__;
packet.hdr.type = VS_CONTROL_PACKET_HEADER;
- packet.hdr.seqno = cpu_to_be16(atomic_inc_return(&hp->seqno));
+ packet.hdr.seqno = cpu_to_be16(atomic_inc_return_wrap(&hp->seqno));
packet.hdr.len = 6;
packet.verb = cpu_to_be16(VSV_CLOSE_PROTOCOL);
diff --git a/drivers/tty/hvc/hvsi_lib.c b/drivers/tty/hvc/hvsi_lib.c
index a270f04..ce9ceaf 100644
--- a/drivers/tty/hvc/hvsi_lib.c
+++ b/drivers/tty/hvc/hvsi_lib.c
@@ -8,7 +8,7 @@
static int hvsi_send_packet(struct hvsi_priv *pv, struct hvsi_header *packet)
{
- packet->seqno = cpu_to_be16(atomic_inc_return(&pv->seqno));
+ packet->seqno = cpu_to_be16(atomic_inc_return_wrap(&pv->seqno));
/* Assumes that always succeeds, works in practice */
return pv->put_chars(pv->termno, (char *)packet, packet->len);
@@ -20,7 +20,7 @@ static void hvsi_start_handshake(struct hvsi_priv *pv)
/* Reset state */
pv->established = 0;
- atomic_set(&pv->seqno, 0);
+ atomic_set_wrap(&pv->seqno, 0);
pr_devel("HVSI@%x: Handshaking started\n", pv->termno);
diff --git a/drivers/tty/serial/ioc4_serial.c b/drivers/tty/serial/ioc4_serial.c
index e5c42fe..edfed43 100644
--- a/drivers/tty/serial/ioc4_serial.c
+++ b/drivers/tty/serial/ioc4_serial.c
@@ -437,7 +437,7 @@ struct ioc4_soft {
} is_intr_info[MAX_IOC4_INTR_ENTS];
/* Number of entries active in the above array */
- atomic_t is_num_intrs;
+ atomic_wrap_t is_num_intrs;
} is_intr_type[IOC4_NUM_INTR_TYPES];
/* is_ir_lock must be held while
@@ -974,7 +974,7 @@ intr_connect(struct ioc4_soft *soft, int type,
BUG_ON(!((type == IOC4_SIO_INTR_TYPE)
|| (type == IOC4_OTHER_INTR_TYPE)));
- i = atomic_inc_return(&soft-> is_intr_type[type].is_num_intrs) - 1;
+ i = atomic_inc_return_wrap(&soft->is_intr_type[type].is_num_intrs) - 1;
BUG_ON(!(i < MAX_IOC4_INTR_ENTS || (printk("i %d\n", i), 0)));
/* Save off the lower level interrupt handler */
@@ -1001,7 +1001,7 @@ static irqreturn_t ioc4_intr(int irq, void *arg)
soft = arg;
for (intr_type = 0; intr_type < IOC4_NUM_INTR_TYPES; intr_type++) {
- num_intrs = (int)atomic_read(
+ num_intrs = (int)atomic_read_wrap(
&soft->is_intr_type[intr_type].is_num_intrs);
this_mir = this_ir = pending_intrs(soft, intr_type);
diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
index 7312e7e..dab67a7 100644
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -1726,7 +1726,7 @@ static struct uart_driver msm_uart_driver = {
.cons = MSM_CONSOLE,
};
-static atomic_t msm_uart_next_id = ATOMIC_INIT(0);
+static atomic_wrap_t msm_uart_next_id = ATOMIC_INIT(0);
static const struct of_device_id msm_uartdm_table[] = {
{ .compatible = "qcom,msm-uartdm-v1.1", .data = (void *)UARTDM_1P1 },
@@ -1750,7 +1750,7 @@ static int msm_serial_probe(struct platform_device *pdev)
line = pdev->id;
if (line < 0)
- line = atomic_inc_return(&msm_uart_next_id) - 1;
+ line = atomic_inc_return_wrap(&msm_uart_next_id) - 1;
if (unlikely(line < 0 || line >= UART_NR))
return -ENXIO;
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index fba021f..a5bed75 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -231,7 +231,8 @@ static ssize_t event_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct uio_device *idev = dev_get_drvdata(dev);
- return sprintf(buf, "%u\n", (unsigned int)atomic_read(&idev->event));
+ return sprintf(buf, "%u\n",
+ (unsigned int)atomic_read_wrap(&idev->event));
}
static DEVICE_ATTR_RO(event);
@@ -401,7 +402,7 @@ void uio_event_notify(struct uio_info *info)
{
struct uio_device *idev = info->uio_dev;
- atomic_inc(&idev->event);
+ atomic_inc_wrap(&idev->event);
wake_up_interruptible(&idev->wait);
kill_fasync(&idev->async_queue, SIGIO, POLL_IN);
}
@@ -454,7 +455,7 @@ static int uio_open(struct inode *inode, struct file *filep)
}
listener->dev = idev;
- listener->event_count = atomic_read(&idev->event);
+ listener->event_count = atomic_read_wrap(&idev->event);
filep->private_data = listener;
if (idev->info->open) {
@@ -505,7 +506,7 @@ static unsigned int uio_poll(struct file *filep, poll_table *wait)
return -EIO;
poll_wait(filep, &idev->wait, wait);
- if (listener->event_count != atomic_read(&idev->event))
+ if (listener->event_count != atomic_read_wrap(&idev->event))
return POLLIN | POLLRDNORM;
return 0;
}
@@ -530,7 +531,7 @@ static ssize_t uio_read(struct file *filep, char __user *buf,
do {
set_current_state(TASK_INTERRUPTIBLE);
- event_count = atomic_read(&idev->event);
+ event_count = atomic_read_wrap(&idev->event);
if (event_count != listener->event_count) {
__set_current_state(TASK_RUNNING);
if (copy_to_user(buf, &event_count, count))
@@ -822,7 +823,7 @@ int __uio_register_device(struct module *owner,
idev->owner = owner;
idev->info = info;
init_waitqueue_head(&idev->wait);
- atomic_set(&idev->event, 0);
+ atomic_set_wrap(&idev->event, 0);
ret = uio_get_minor(idev);
if (ret)
diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c
index ef04b50..27b7a73 100644
--- a/drivers/usb/core/devices.c
+++ b/drivers/usb/core/devices.c
@@ -119,7 +119,7 @@ static const char format_endpt[] =
* time it gets called.
*/
static struct device_connect_event {
- atomic_t count;
+ atomic_wrap_t count;
wait_queue_head_t wait;
} device_event = {
.count = ATOMIC_INIT(1),
@@ -157,7 +157,7 @@ static const struct class_info clas_info[] = {
void usbfs_conn_disc_event(void)
{
- atomic_add(2, &device_event.count);
+ atomic_add_wrap(2, &device_event.count);
wake_up(&device_event.wait);
}
@@ -648,7 +648,7 @@ static unsigned int usb_device_poll(struct file *file,
poll_wait(file, &device_event.wait, wait);
- event_count = atomic_read(&device_event.count);
+ event_count = atomic_read_wrap(&device_event.count);
if (file->f_version != event_count) {
file->f_version = event_count;
return POLLIN | POLLRDNORM;
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 746c47d..36b8de1 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -1630,7 +1630,7 @@ int usb_hcd_submit_urb (struct urb *urb, gfp_t mem_flags)
*/
usb_get_urb(urb);
atomic_inc(&urb->use_count);
- atomic_inc(&urb->dev->urbnum);
+ atomic_inc_wrap(&urb->dev->urbnum);
usbmon_urb_submit(&hcd->self, urb);
/* NOTE requirements on root-hub callers (usbfs and the hub
@@ -1657,7 +1657,7 @@ int usb_hcd_submit_urb (struct urb *urb, gfp_t mem_flags)
urb->hcpriv = NULL;
INIT_LIST_HEAD(&urb->urb_list);
atomic_dec(&urb->use_count);
- atomic_dec(&urb->dev->urbnum);
+ atomic_dec_wrap(&urb->dev->urbnum);
if (atomic_read(&urb->reject))
wake_up(&usb_kill_urb_queue);
usb_put_urb(urb);
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index c953a0f..33ccc34 100644
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -259,7 +259,7 @@ static ssize_t urbnum_show(struct device *dev, struct device_attribute *attr,
struct usb_device *udev;
udev = to_usb_device(dev);
- return sprintf(buf, "%d\n", atomic_read(&udev->urbnum));
+ return sprintf(buf, "%d\n", atomic_read_wrap(&udev->urbnum));
}
static DEVICE_ATTR_RO(urbnum);
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 5921514..bebba54 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -455,7 +455,7 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent,
set_dev_node(&dev->dev, dev_to_node(bus->controller));
dev->state = USB_STATE_ATTACHED;
dev->lpm_disable_count = 1;
- atomic_set(&dev->urbnum, 0);
+ atomic_set_wrap(&dev->urbnum, 0);
INIT_LIST_HEAD(&dev->ep0.urb_list);
dev->ep0.desc.bLength = USB_DT_ENDPOINT_SIZE;
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index 74f62d6..8fb7d3d 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -777,7 +777,7 @@ static struct urb *request_single_step_set_feature_urb(
urb->transfer_flags = URB_DIR_IN;
usb_get_urb(urb);
atomic_inc(&urb->use_count);
- atomic_inc(&urb->dev->urbnum);
+ atomic_inc_wrap(&urb->dev->urbnum);
urb->setup_dma = dma_map_single(
hcd->self.controller,
urb->setup_packet,
@@ -844,7 +844,7 @@ static int ehset_single_step_set_feature(struct usb_hcd *hcd, int port)
urb->status = -EINPROGRESS;
usb_get_urb(urb);
atomic_inc(&urb->use_count);
- atomic_inc(&urb->dev->urbnum);
+ atomic_inc_wrap(&urb->dev->urbnum);
retval = submit_single_step_set_feature(hcd, urb, 0);
if (!retval && !wait_for_completion_timeout(&done,
msecs_to_jiffies(2000))) {
diff --git a/drivers/usb/misc/appledisplay.c b/drivers/usb/misc/appledisplay.c
index da5ff40..d90cef2 100644
--- a/drivers/usb/misc/appledisplay.c
+++ b/drivers/usb/misc/appledisplay.c
@@ -84,7 +84,7 @@ struct appledisplay {
struct mutex sysfslock; /* concurrent read and write */
};
-static atomic_t count_displays = ATOMIC_INIT(0);
+static atomic_wrap_t count_displays = ATOMIC_INIT(0);
static void appledisplay_complete(struct urb *urb)
{
@@ -283,7 +283,7 @@ static int appledisplay_probe(struct usb_interface *iface,
/* Register backlight device */
snprintf(bl_name, sizeof(bl_name), "appledisplay%d",
- atomic_inc_return(&count_displays) - 1);
+ atomic_inc_return_wrap(&count_displays) - 1);
memset(&props, 0, sizeof(struct backlight_properties));
props.type = BACKLIGHT_RAW;
props.max_brightness = 0xff;
diff --git a/drivers/usb/usbip/vhci.h b/drivers/usb/usbip/vhci.h
index 88b71c4..a54538c 100644
--- a/drivers/usb/usbip/vhci.h
+++ b/drivers/usb/usbip/vhci.h
@@ -96,7 +96,7 @@ struct vhci_hcd {
unsigned resuming:1;
unsigned long re_timeout;
- atomic_t seqnum;
+ atomic_wrap_t seqnum;
/*
* NOTE:
diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c
index 03eccf2..6f8e9a5 100644
--- a/drivers/usb/usbip/vhci_hcd.c
+++ b/drivers/usb/usbip/vhci_hcd.c
@@ -476,7 +476,7 @@ static void vhci_tx_urb(struct urb *urb)
spin_lock_irqsave(&vdev->priv_lock, flags);
- priv->seqnum = atomic_inc_return(&vhci->seqnum);
+ priv->seqnum = atomic_inc_return_wrap(&vhci->seqnum);
if (priv->seqnum == 0xffff)
dev_info(&urb->dev->dev, "seqnum max\n");
@@ -730,7 +730,7 @@ static int vhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
return -ENOMEM;
}
- unlink->seqnum = atomic_inc_return(&vhci->seqnum);
+ unlink->seqnum = atomic_inc_return_wrap(&vhci->seqnum);
if (unlink->seqnum == 0xffff)
pr_info("seqnum max\n");
@@ -956,7 +956,7 @@ static int vhci_start(struct usb_hcd *hcd)
vdev->rhport = rhport;
}
- atomic_set(&vhci->seqnum, 0);
+ atomic_set_wrap(&vhci->seqnum, 0);
spin_lock_init(&vhci->lock);
hcd->power_budget = 0; /* no limit */
diff --git a/drivers/usb/usbip/vhci_rx.c b/drivers/usb/usbip/vhci_rx.c
index fc2d319..7e2c1cd 100644
--- a/drivers/usb/usbip/vhci_rx.c
+++ b/drivers/usb/usbip/vhci_rx.c
@@ -82,7 +82,7 @@ static void vhci_recv_ret_submit(struct vhci_device *vdev,
if (!urb) {
pr_err("cannot find a urb of seqnum %u\n", pdu->base.seqnum);
pr_info("max seqnum %d\n",
- atomic_read(&vhci->seqnum));
+ atomic_read_wrap(&vhci->seqnum));
usbip_event_add(ud, VDEV_EVENT_ERROR_TCP);
return;
}
diff --git a/drivers/usb/wusbcore/wa-hc.h b/drivers/usb/wusbcore/wa-hc.h
index edc7267..7a0e889 100644
--- a/drivers/usb/wusbcore/wa-hc.h
+++ b/drivers/usb/wusbcore/wa-hc.h
@@ -240,7 +240,7 @@ struct wahc {
spinlock_t xfer_list_lock;
struct work_struct xfer_enqueue_work;
struct work_struct xfer_error_work;
- atomic_t xfer_id_count;
+ atomic_wrap_t xfer_id_count;
kernel_ulong_t quirks;
};
@@ -305,7 +305,7 @@ static inline void wa_init(struct wahc *wa)
INIT_WORK(&wa->xfer_enqueue_work, wa_urb_enqueue_run);
INIT_WORK(&wa->xfer_error_work, wa_process_errored_transfers_run);
wa->dto_in_use = 0;
- atomic_set(&wa->xfer_id_count, 1);
+ atomic_set_wrap(&wa->xfer_id_count, 1);
/* init the buf in URBs */
for (index = 0; index < WA_MAX_BUF_IN_URBS; ++index)
usb_init_urb(&(wa->buf_in_urbs[index]));
diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c
index 167fcc71..71cd4d0 100644
--- a/drivers/usb/wusbcore/wa-xfer.c
+++ b/drivers/usb/wusbcore/wa-xfer.c
@@ -314,7 +314,7 @@ static void wa_xfer_completion(struct wa_xfer *xfer)
*/
static void wa_xfer_id_init(struct wa_xfer *xfer)
{
- xfer->id = atomic_add_return(1, &xfer->wa->xfer_id_count);
+ xfer->id = atomic_add_return_wrap(1, &xfer->wa->xfer_id_count);
}
/* Return the xfer's ID. */
diff --git a/drivers/video/fbdev/hyperv_fb.c b/drivers/video/fbdev/hyperv_fb.c
index 2fd49b2..56a347a 100644
--- a/drivers/video/fbdev/hyperv_fb.c
+++ b/drivers/video/fbdev/hyperv_fb.c
@@ -240,7 +240,7 @@ static uint screen_fb_size;
static inline int synthvid_send(struct hv_device *hdev,
struct synthvid_msg *msg)
{
- static atomic64_t request_id = ATOMIC64_INIT(0);
+ static atomic64_wrap_t request_id = ATOMIC64_INIT(0);
int ret;
msg->pipe_hdr.type = PIPE_MSG_DATA;
@@ -248,7 +248,7 @@ static inline int synthvid_send(struct hv_device *hdev,
ret = vmbus_sendpacket(hdev->channel, msg,
msg->vid_hdr.size + sizeof(struct pipe_msg_hdr),
- atomic64_inc_return(&request_id),
+ atomic64_inc_return_wrap(&request_id),
VM_PKT_DATA_INBAND, 0);
if (ret)
diff --git a/drivers/video/fbdev/udlfb.c b/drivers/video/fbdev/udlfb.c
index e9c2f7b..205d362 100644
--- a/drivers/video/fbdev/udlfb.c
+++ b/drivers/video/fbdev/udlfb.c
@@ -623,11 +623,11 @@ static int dlfb_handle_damage(struct dlfb_data *dev, int x, int y,
dlfb_urb_completion(urb);
error:
- atomic_add(bytes_sent, &dev->bytes_sent);
- atomic_add(bytes_identical, &dev->bytes_identical);
- atomic_add(width*height*2, &dev->bytes_rendered);
+ atomic_add_wrap(bytes_sent, &dev->bytes_sent);
+ atomic_add_wrap(bytes_identical, &dev->bytes_identical);
+ atomic_add_wrap(width*height*2, &dev->bytes_rendered);
end_cycles = get_cycles();
- atomic_add(((unsigned int) ((end_cycles - start_cycles)
+ atomic_add_wrap(((unsigned int) ((end_cycles - start_cycles)
>> 10)), /* Kcycles */
&dev->cpu_kcycles_used);
@@ -748,11 +748,11 @@ static void dlfb_dpy_deferred_io(struct fb_info *info,
dlfb_urb_completion(urb);
error:
- atomic_add(bytes_sent, &dev->bytes_sent);
- atomic_add(bytes_identical, &dev->bytes_identical);
- atomic_add(bytes_rendered, &dev->bytes_rendered);
+ atomic_add_wrap(bytes_sent, &dev->bytes_sent);
+ atomic_add_wrap(bytes_identical, &dev->bytes_identical);
+ atomic_add_wrap(bytes_rendered, &dev->bytes_rendered);
end_cycles = get_cycles();
- atomic_add(((unsigned int) ((end_cycles - start_cycles)
+ atomic_add_wrap(((unsigned int) ((end_cycles - start_cycles)
>> 10)), /* Kcycles */
&dev->cpu_kcycles_used);
}
@@ -1373,7 +1373,7 @@ static ssize_t metrics_bytes_rendered_show(struct device *fbdev,
struct fb_info *fb_info = dev_get_drvdata(fbdev);
struct dlfb_data *dev = fb_info->par;
return snprintf(buf, PAGE_SIZE, "%u\n",
- atomic_read(&dev->bytes_rendered));
+ atomic_read_wrap(&dev->bytes_rendered));
}
static ssize_t metrics_bytes_identical_show(struct device *fbdev,
@@ -1381,7 +1381,7 @@ static ssize_t metrics_bytes_identical_show(struct device *fbdev,
struct fb_info *fb_info = dev_get_drvdata(fbdev);
struct dlfb_data *dev = fb_info->par;
return snprintf(buf, PAGE_SIZE, "%u\n",
- atomic_read(&dev->bytes_identical));
+ atomic_read_wrap(&dev->bytes_identical));
}
static ssize_t metrics_bytes_sent_show(struct device *fbdev,
@@ -1389,7 +1389,7 @@ static ssize_t metrics_bytes_sent_show(struct device *fbdev,
struct fb_info *fb_info = dev_get_drvdata(fbdev);
struct dlfb_data *dev = fb_info->par;
return snprintf(buf, PAGE_SIZE, "%u\n",
- atomic_read(&dev->bytes_sent));
+ atomic_read_wrap(&dev->bytes_sent));
}
static ssize_t metrics_cpu_kcycles_used_show(struct device *fbdev,
@@ -1397,7 +1397,7 @@ static ssize_t metrics_cpu_kcycles_used_show(struct device *fbdev,
struct fb_info *fb_info = dev_get_drvdata(fbdev);
struct dlfb_data *dev = fb_info->par;
return snprintf(buf, PAGE_SIZE, "%u\n",
- atomic_read(&dev->cpu_kcycles_used));
+ atomic_read_wrap(&dev->cpu_kcycles_used));
}
static ssize_t edid_show(
@@ -1457,10 +1457,10 @@ static ssize_t metrics_reset_store(struct device *fbdev,
struct fb_info *fb_info = dev_get_drvdata(fbdev);
struct dlfb_data *dev = fb_info->par;
- atomic_set(&dev->bytes_rendered, 0);
- atomic_set(&dev->bytes_identical, 0);
- atomic_set(&dev->bytes_sent, 0);
- atomic_set(&dev->cpu_kcycles_used, 0);
+ atomic_set_wrap(&dev->bytes_rendered, 0);
+ atomic_set_wrap(&dev->bytes_identical, 0);
+ atomic_set_wrap(&dev->bytes_sent, 0);
+ atomic_set_wrap(&dev->cpu_kcycles_used, 0);
return count;
}
diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h
index b2a0f15..3a8b186 100644
--- a/include/linux/oprofile.h
+++ b/include/linux/oprofile.h
@@ -140,7 +140,7 @@ int oprofilefs_create_ro_ulong(struct dentry * root,
/** Create a file for read-only access to an atomic_t. */
int oprofilefs_create_ro_atomic(struct dentry * root,
- char const * name, atomic_t * val);
+ char const *name, atomic_wrap_t *val);
/** create a directory */
struct dentry *oprofilefs_mkdir(struct dentry *parent, char const *name);
diff --git a/include/linux/uio_driver.h b/include/linux/uio_driver.h
index 32c0e83..210eb56 100644
--- a/include/linux/uio_driver.h
+++ b/include/linux/uio_driver.h
@@ -67,7 +67,7 @@ struct uio_device {
struct module *owner;
struct device *dev;
int minor;
- atomic_t event;
+ atomic_wrap_t event;
struct fasync_struct *async_queue;
wait_queue_head_t wait;
struct uio_info *info;
diff --git a/include/linux/usb.h b/include/linux/usb.h
index eba1f10..164a40e 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -599,7 +599,7 @@ struct usb_device {
int maxchild;
u32 quirks;
- atomic_t urbnum;
+ atomic_wrap_t urbnum;
unsigned long active_duration;
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index 8a95631..18dac0e 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -193,9 +193,9 @@ struct scsi_device {
unsigned int max_device_blocked; /* what device_blocked counts down from */
#define SCSI_DEFAULT_DEVICE_BLOCKED 3
- atomic_t iorequest_cnt;
- atomic_t iodone_cnt;
- atomic_t ioerr_cnt;
+ atomic_wrap_t iorequest_cnt;
+ atomic_wrap_t iodone_cnt;
+ atomic_wrap_t ioerr_cnt;
struct device sdev_gendev,
sdev_dev;
diff --git a/include/video/udlfb.h b/include/video/udlfb.h
index f9466fa..c3eb166 100644
--- a/include/video/udlfb.h
+++ b/include/video/udlfb.h
@@ -53,10 +53,14 @@ struct dlfb_data {
u32 pseudo_palette[256];
int blank_mode; /*one of FB_BLANK_ */
/* blit-only rendering path metrics, exposed through sysfs */
- atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */
- atomic_t bytes_identical; /* saved effort with backbuffer comparison */
- atomic_t bytes_sent; /* to usb, after compression including overhead */
- atomic_t cpu_kcycles_used; /* transpired during pixel processing */
+ atomic_wrap_t bytes_rendered;
+ /* raw pixel-bytes driver asked to render */
+ atomic_wrap_t bytes_identical;
+ /* saved effort with backbuffer comparison */
+ atomic_wrap_t bytes_sent;
+ /* to usb, after compression including overhead */
+ atomic_wrap_t cpu_kcycles_used;
+ /* transpired during pixel processing */
};
#define NR_USB_REQUEST_I2C_SUB_IO 0x02
--
2.7.4
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