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Message-Id: <20190929163028.9665-13-romain.perier@gmail.com>
Date: Sun, 29 Sep 2019 18:30:24 +0200
From: Romain Perier <romain.perier@...il.com>
To: kernel-hardening@...ts.openwall.com
Cc: Kees Cook <keescook@...omium.org>,
Romain Perier <romain.perier@...il.com>
Subject: [PRE-REVIEW PATCH 12/16] tasklet: Pass tasklet_struct pointer as .data in DECLARE_TASKLET
Now that all tasklet initializations have been replaced, this updates
the core of the DECLARE_TASKLET macros by passing the pointer of the
tasklet structure as .data, so current static tasklets will continue to
work by deadling with the tasklet_struct pointer in their handler,
without have to change the API of the macro. It also updates all
callbacks of all tasklets statically allocated via DECLARE_TASKLET() for
extracting the the parent data structure of the tasklet by using
from_tasklet().
Signed-off-by: Romain Perier <romain.perier@...il.com>
---
arch/mips/lasat/picvue_proc.c | 2 +-
drivers/input/keyboard/omap-keypad.c | 14 ++++++++------
drivers/input/serio/hil_mlc.c | 4 ++--
drivers/net/wan/farsync.c | 8 ++++----
drivers/s390/crypto/ap_bus.c | 8 ++++----
drivers/staging/most/dim2/dim2.c | 20 +++++++++++---------
drivers/staging/octeon/ethernet-tx.c | 4 ++--
drivers/tty/vt/keyboard.c | 2 +-
drivers/usb/gadget/udc/amd5536udc.h | 1 +
drivers/usb/gadget/udc/snps_udc_core.c | 17 ++++++++---------
drivers/usb/host/fhci-hcd.c | 5 +++--
drivers/usb/host/fhci-sched.c | 8 ++++----
drivers/usb/host/fhci.h | 2 +-
include/linux/interrupt.h | 10 +++++-----
kernel/backtracetest.c | 2 +-
kernel/debug/debug_core.c | 2 +-
kernel/irq/resend.c | 2 +-
net/atm/pppoatm.c | 7 ++++---
net/iucv/iucv.c | 4 ++--
sound/drivers/pcsp/pcsp_lib.c | 2 +-
20 files changed, 65 insertions(+), 59 deletions(-)
diff --git a/arch/mips/lasat/picvue_proc.c b/arch/mips/lasat/picvue_proc.c
index 8126f15b8e09..ebb5b4c3079b 100644
--- a/arch/mips/lasat/picvue_proc.c
+++ b/arch/mips/lasat/picvue_proc.c
@@ -30,7 +30,7 @@ static int scroll_dir, scroll_interval;
static struct timer_list timer;
-static void pvc_display(unsigned long data)
+static void pvc_display(struct tasklet_struct *unused)
{
int i;
diff --git a/drivers/input/keyboard/omap-keypad.c b/drivers/input/keyboard/omap-keypad.c
index 5fe7a5633e33..f202ea05f647 100644
--- a/drivers/input/keyboard/omap-keypad.c
+++ b/drivers/input/keyboard/omap-keypad.c
@@ -27,7 +27,7 @@
#undef NEW_BOARD_LEARNING_MODE
-static void omap_kp_tasklet(unsigned long);
+static void omap_kp_tasklet(struct tasklet_struct *);
static void omap_kp_timer(struct timer_list *);
static unsigned char keypad_state[8];
@@ -44,9 +44,9 @@ struct omap_kp {
unsigned long delay;
unsigned int debounce;
unsigned short keymap[];
+ struct tasklet_struct kp_tasklet;
};
-static DECLARE_TASKLET_DISABLED(kp_tasklet, omap_kp_tasklet, 0);
static unsigned int *row_gpios;
static unsigned int *col_gpios;
@@ -88,9 +88,10 @@ static void omap_kp_scan_keypad(struct omap_kp *omap_kp, unsigned char *state)
udelay(2);
}
-static void omap_kp_tasklet(unsigned long data)
+static void omap_kp_tasklet(struct tasklet_struct *t)
{
- struct omap_kp *omap_kp_data = (struct omap_kp *) data;
+ struct omap_kp *omap_kp_data = from_tasklet(omap_kp_data, t,
+ kp_tasklet);
unsigned short *keycodes = omap_kp_data->input->keycode;
unsigned int row_shift = get_count_order(omap_kp_data->cols);
unsigned char new_state[8], changed, key_down = 0;
@@ -181,6 +182,7 @@ static int omap_kp_probe(struct platform_device *pdev)
struct omap_kp_platform_data *pdata = dev_get_platdata(&pdev->dev);
int i, col_idx, row_idx, ret;
unsigned int row_shift, keycodemax;
+ DECLARE_TASKLET_DISABLED(kp_tasklet, omap_kp_tasklet, 0);
if (!pdata->rows || !pdata->cols || !pdata->keymap_data) {
printk(KERN_ERR "No rows, cols or keymap_data from pdata\n");
@@ -222,8 +224,8 @@ static int omap_kp_probe(struct platform_device *pdev)
timer_setup(&omap_kp->timer, omap_kp_timer, 0);
- /* get the irq and init timer*/
- kp_tasklet.data = (unsigned long) omap_kp;
+ omap_kp->kp_tasklet = kp_tasklet;
+ omap_kp->kp_tasklet.data = (TASKLET_DATA_TYPE)&omap_kp->kp_tasklet;
tasklet_enable(&kp_tasklet);
ret = device_create_file(&pdev->dev, &dev_attr_enable);
diff --git a/drivers/input/serio/hil_mlc.c b/drivers/input/serio/hil_mlc.c
index e1423f7648d6..d7a4ea4f0695 100644
--- a/drivers/input/serio/hil_mlc.c
+++ b/drivers/input/serio/hil_mlc.c
@@ -76,7 +76,7 @@ static DEFINE_RWLOCK(hil_mlcs_lock);
static struct timer_list hil_mlcs_kicker;
static int hil_mlcs_probe;
-static void hil_mlcs_process(unsigned long unused);
+static void hil_mlcs_process(struct tasklet_struct *unused);
static DECLARE_TASKLET_DISABLED(hil_mlcs_tasklet, hil_mlcs_process, 0);
@@ -757,7 +757,7 @@ static int hilse_donode(hil_mlc *mlc)
}
/******************** tasklet context functions **************************/
-static void hil_mlcs_process(unsigned long unused)
+static void hil_mlcs_process(struct tasklet_struct *unused)
{
struct list_head *tmp;
diff --git a/drivers/net/wan/farsync.c b/drivers/net/wan/farsync.c
index 1901ec7948d8..d2da087191ba 100644
--- a/drivers/net/wan/farsync.c
+++ b/drivers/net/wan/farsync.c
@@ -566,8 +566,8 @@ MODULE_DEVICE_TABLE(pci, fst_pci_dev_id);
static void do_bottom_half_tx(struct fst_card_info *card);
static void do_bottom_half_rx(struct fst_card_info *card);
-static void fst_process_tx_work_q(unsigned long work_q);
-static void fst_process_int_work_q(unsigned long work_q);
+static void fst_process_tx_work_q(struct tasklet_struct *work_q);
+static void fst_process_int_work_q(struct tasklet_struct *work_q);
static DECLARE_TASKLET(fst_tx_task, fst_process_tx_work_q, 0);
static DECLARE_TASKLET(fst_int_task, fst_process_int_work_q, 0);
@@ -600,7 +600,7 @@ fst_q_work_item(u64 * queue, int card_index)
}
static void
-fst_process_tx_work_q(unsigned long /*void **/work_q)
+fst_process_tx_work_q(struct tasklet_struct * /*void **/work_q)
{
unsigned long flags;
u64 work_txq;
@@ -630,7 +630,7 @@ fst_process_tx_work_q(unsigned long /*void **/work_q)
}
static void
-fst_process_int_work_q(unsigned long /*void **/work_q)
+fst_process_int_work_q(struct tasklet_struct * /*void **/work_q)
{
unsigned long flags;
u64 work_intq;
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index a76b8a8bcbbb..a013effd2536 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -90,7 +90,7 @@ static DECLARE_WORK(ap_scan_work, ap_scan_bus);
/*
* Tasklet & timer for AP request polling and interrupts
*/
-static void ap_tasklet_fn(unsigned long);
+static void ap_tasklet_fn(struct tasklet_struct *t);
static DECLARE_TASKLET(ap_tasklet, ap_tasklet_fn, 0);
static DECLARE_WAIT_QUEUE_HEAD(ap_poll_wait);
static struct task_struct *ap_poll_kthread;
@@ -419,11 +419,11 @@ static void ap_interrupt_handler(struct airq_struct *airq, bool floating)
/**
* ap_tasklet_fn(): Tasklet to poll all AP devices.
- * @dummy: Unused variable
+ * @unused: Unused variable
*
* Poll all AP devices on the bus.
*/
-static void ap_tasklet_fn(unsigned long dummy)
+static void ap_tasklet_fn(struct tasklet_struct *unused)
{
struct ap_card *ac;
struct ap_queue *aq;
@@ -497,7 +497,7 @@ static int ap_poll_thread(void *data)
try_to_freeze();
continue;
}
- ap_tasklet_fn(0);
+ ap_tasklet_fn(&ap_tasklet);
}
return 0;
diff --git a/drivers/staging/most/dim2/dim2.c b/drivers/staging/most/dim2/dim2.c
index 64c979155a49..98f0acca5c06 100644
--- a/drivers/staging/most/dim2/dim2.c
+++ b/drivers/staging/most/dim2/dim2.c
@@ -46,8 +46,7 @@ MODULE_PARM_DESC(fcnt, "Num of frames per sub-buffer for sync channels as a powe
static DEFINE_SPINLOCK(dim_lock);
-static void dim2_tasklet_fn(unsigned long data);
-static DECLARE_TASKLET(dim2_tasklet, dim2_tasklet_fn, 0);
+static void dim2_tasklet_fn(struct tasklet_struct *t);
/**
* struct hdm_channel - private structure to keep channel specific data
@@ -102,6 +101,7 @@ struct dim2_hdm {
void (*on_netinfo)(struct most_interface *most_iface,
unsigned char link_state, unsigned char *addrs);
void (*disable_platform)(struct platform_device *);
+ struct tasklet_struct dim2_tasklet;
};
struct dim2_platform_data {
@@ -351,13 +351,13 @@ static irqreturn_t dim2_mlb_isr(int irq, void *_dev)
/**
* dim2_tasklet_fn - tasklet function
- * @data: private data
+ * @t: instance of the running tasklet
*
* Service each initialized channel, if needed
*/
-static void dim2_tasklet_fn(unsigned long data)
+static void dim2_tasklet_fn(struct tasklet_struct *t)
{
- struct dim2_hdm *dev = (struct dim2_hdm *)data;
+ struct dim2_hdm *dev = from_tasklet(dev, t, dim2_tasklet);
unsigned long flags;
int ch_idx;
@@ -393,8 +393,7 @@ static irqreturn_t dim2_ahb_isr(int irq, void *_dev)
dim_service_ahb_int_irq(get_active_channels(dev, buffer));
spin_unlock_irqrestore(&dim_lock, flags);
- dim2_tasklet.data = (unsigned long)dev;
- tasklet_schedule(&dim2_tasklet);
+ tasklet_schedule(&dev->dim2_tasklet);
return IRQ_HANDLED;
}
@@ -641,14 +640,14 @@ static int poison_channel(struct most_interface *most_iface, int ch_idx)
if (!hdm_ch->is_initialized)
return -EPERM;
- tasklet_disable(&dim2_tasklet);
+ tasklet_disable(&dev->dim2_tasklet);
spin_lock_irqsave(&dim_lock, flags);
hal_ret = dim_destroy_channel(&hdm_ch->ch);
hdm_ch->is_initialized = false;
if (ch_idx == dev->atx_idx)
dev->atx_idx = -1;
spin_unlock_irqrestore(&dim_lock, flags);
- tasklet_enable(&dim2_tasklet);
+ tasklet_enable(&dev->dim2_tasklet);
if (hal_ret != DIM_NO_ERROR) {
pr_err("HAL Failed to close channel %s\n", hdm_ch->name);
ret = -EFAULT;
@@ -731,6 +730,7 @@ static int dim2_probe(struct platform_device *pdev)
int ret, i;
u8 hal_ret;
int irq;
+ DECLARE_TASKLET(dim2_tasklet, dim2_tasklet_fn, 0);
enum { MLB_INT_IDX, AHB0_INT_IDX };
@@ -739,6 +739,8 @@ static int dim2_probe(struct platform_device *pdev)
return -ENOMEM;
dev->atx_idx = -1;
+ dev->dim2_tasklet = dim2_tasklet;
+ dev->dim2_tasklet.data = (TASKLET_DATA_TYPE)&dev->dim2_tasklet;
platform_set_drvdata(pdev, dev);
diff --git a/drivers/staging/octeon/ethernet-tx.c b/drivers/staging/octeon/ethernet-tx.c
index c64728fc21f2..acb32a7c8b1d 100644
--- a/drivers/staging/octeon/ethernet-tx.c
+++ b/drivers/staging/octeon/ethernet-tx.c
@@ -40,7 +40,7 @@
#define GET_SKBUFF_QOS(skb) 0
#endif
-static void cvm_oct_tx_do_cleanup(unsigned long arg);
+static void cvm_oct_tx_do_cleanup(struct tasklet_struct *unused);
static DECLARE_TASKLET(cvm_oct_tx_cleanup_tasklet, cvm_oct_tx_do_cleanup, 0);
/* Maximum number of SKBs to try to free per xmit packet. */
@@ -674,7 +674,7 @@ void cvm_oct_tx_shutdown_dev(struct net_device *dev)
}
}
-static void cvm_oct_tx_do_cleanup(unsigned long arg)
+static void cvm_oct_tx_do_cleanup(struct tasklet_struct *unused)
{
int port;
diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c
index 515fc095e3b4..06e54abcfac6 100644
--- a/drivers/tty/vt/keyboard.c
+++ b/drivers/tty/vt/keyboard.c
@@ -1214,7 +1214,7 @@ void vt_kbd_con_stop(int console)
* handle the scenario when keyboard handler is not registered yet
* but we already getting updates from the VT to update led state.
*/
-static void kbd_bh(unsigned long dummy)
+static void kbd_bh(struct tasklet_struct *unused)
{
unsigned int leds;
unsigned long flags;
diff --git a/drivers/usb/gadget/udc/amd5536udc.h b/drivers/usb/gadget/udc/amd5536udc.h
index dfdef6a28904..72b89fb1b3fd 100644
--- a/drivers/usb/gadget/udc/amd5536udc.h
+++ b/drivers/usb/gadget/udc/amd5536udc.h
@@ -573,6 +573,7 @@ struct udc {
struct notifier_block nb;
struct delayed_work drd_work;
struct workqueue_struct *drd_wq;
+ struct tasklet_struct disconnect_tasklet;
u32 conn_type;
};
diff --git a/drivers/usb/gadget/udc/snps_udc_core.c b/drivers/usb/gadget/udc/snps_udc_core.c
index 3fcded31405a..c9f29b7ad986 100644
--- a/drivers/usb/gadget/udc/snps_udc_core.c
+++ b/drivers/usb/gadget/udc/snps_udc_core.c
@@ -36,7 +36,7 @@
#include <asm/unaligned.h>
#include "amd5536udc.h"
-static void udc_tasklet_disconnect(unsigned long);
+static void udc_tasklet_disconnect(struct tasklet_struct *t);
static void udc_setup_endpoints(struct udc *dev);
static void udc_soft_reset(struct udc *dev);
static struct udc_request *udc_alloc_bna_dummy(struct udc_ep *ep);
@@ -95,11 +95,6 @@ static struct timer_list udc_pollstall_timer;
static int stop_pollstall_timer;
static DECLARE_COMPLETION(on_pollstall_exit);
-/* tasklet for usb disconnect */
-static DECLARE_TASKLET(disconnect_tasklet, udc_tasklet_disconnect,
- (unsigned long) &udc);
-
-
/* endpoint names used for print */
static const char ep0_string[] = "ep0in";
static const struct {
@@ -1655,13 +1650,13 @@ static void usb_disconnect(struct udc *dev)
* the spinlock needed to process the disconnect.
*/
- tasklet_schedule(&disconnect_tasklet);
+ tasklet_schedule(&dev->disconnect_tasklet);
}
/* Tasklet for disconnect to be outside of interrupt context */
-static void udc_tasklet_disconnect(unsigned long par)
+static void udc_tasklet_disconnect(struct tasklet_struct *t)
{
- struct udc *dev = (struct udc *)(*((struct udc **) par));
+ struct udc *dev = from_tasklet(dev, t, disconnect_tasklet);
u32 tmp;
DBG(dev, "Tasklet disconnect\n");
@@ -3156,6 +3151,7 @@ int udc_probe(struct udc *dev)
char tmp[128];
u32 reg;
int retval;
+ DECLARE_TASKLET(disconnect_tasklet, udc_tasklet_disconnect, 0);
/* device struct setup */
dev->gadget.ops = &udc_ops;
@@ -3190,6 +3186,9 @@ int udc_probe(struct udc *dev)
udc = dev;
+ dev->disconnect_tasklet = disconnect_tasklet;
+ dev->disconnect_tasklet.data = (TASKLET_DATA_TYPE)&dev->disconnect_tasklet;
+
retval = usb_add_gadget_udc_release(udc->dev, &dev->gadget,
gadget_release);
if (retval)
diff --git a/drivers/usb/host/fhci-hcd.c b/drivers/usb/host/fhci-hcd.c
index 04733876c9c6..27e9b637a38e 100644
--- a/drivers/usb/host/fhci-hcd.c
+++ b/drivers/usb/host/fhci-hcd.c
@@ -210,8 +210,9 @@ static int fhci_mem_init(struct fhci_hcd *fhci)
INIT_LIST_HEAD(&fhci->empty_tds);
/* initialize work queue to handle done list */
- fhci_tasklet.data = (unsigned long)fhci;
- fhci->process_done_task = &fhci_tasklet;
+ fhci->process_done_task = fhci_tasklet;
+ fhci->process_done_task.data =
+ (TASKLET_DATA_TYPE)&fhci->process_done_task;
for (i = 0; i < MAX_TDS; i++) {
struct td *td;
diff --git a/drivers/usb/host/fhci-sched.c b/drivers/usb/host/fhci-sched.c
index 3235d5307403..a04a049c7cd9 100644
--- a/drivers/usb/host/fhci-sched.c
+++ b/drivers/usb/host/fhci-sched.c
@@ -628,13 +628,13 @@ irqreturn_t fhci_irq(struct usb_hcd *hcd)
* is process_del_list(),which unlinks URBs by scanning EDs,instead of scanning
* the (re-reversed) done list as this does.
*/
-static void process_done_list(unsigned long data)
+static void process_done_list(struct tasklet_struct *t)
{
struct urb *urb;
struct ed *ed;
struct td *td;
struct urb_priv *urb_priv;
- struct fhci_hcd *fhci = (struct fhci_hcd *)data;
+ struct fhci_hcd *fhci = from_tasklet(fhci, t, process_done_task);
disable_irq(fhci->timer->irq);
disable_irq(fhci_to_hcd(fhci)->irq);
@@ -682,8 +682,8 @@ DECLARE_TASKLET(fhci_tasklet, process_done_list, 0);
/* transfer complted callback */
u32 fhci_transfer_confirm_callback(struct fhci_hcd *fhci)
{
- if (!fhci->process_done_task->state)
- tasklet_schedule(fhci->process_done_task);
+ if (!fhci->process_done_task.state)
+ tasklet_schedule(&fhci->process_done_task);
return 0;
}
diff --git a/drivers/usb/host/fhci.h b/drivers/usb/host/fhci.h
index 2ce5031d866d..196f9a15ebd0 100644
--- a/drivers/usb/host/fhci.h
+++ b/drivers/usb/host/fhci.h
@@ -254,7 +254,7 @@ struct fhci_hcd {
struct virtual_root_hub *vroot_hub; /* the virtual root hub */
int active_urbs;
struct fhci_controller_list *hc_list;
- struct tasklet_struct *process_done_task; /* tasklet for done list */
+ struct tasklet_struct process_done_task; /* tasklet for done list */
struct list_head empty_eds;
struct list_head empty_tds;
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index f5332ae2dbeb..949bbaeaff0e 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -598,11 +598,14 @@ struct tasklet_struct
unsigned long data;
};
+#define TASKLET_DATA_TYPE unsigned long
+#define TASKLET_FUNC_TYPE void (*)(TASKLET_DATA_TYPE)
+
#define DECLARE_TASKLET(name, func, data) \
-struct tasklet_struct name = { NULL, 0, ATOMIC_INIT(0), func, data }
+struct tasklet_struct name = { NULL, 0, ATOMIC_INIT(0), (TASKLET_FUNC_TYPE)func, (TASKLET_DATA_TYPE)&name }
#define DECLARE_TASKLET_DISABLED(name, func, data) \
-struct tasklet_struct name = { NULL, 0, ATOMIC_INIT(1), func, data }
+struct tasklet_struct name = { NULL, 0, ATOMIC_INIT(1), (TASKLET_FUNC_TYPE)func, (TASKLET_DATA_TYPE)&name }
enum
@@ -673,9 +676,6 @@ extern void tasklet_kill_immediate(struct tasklet_struct *t, unsigned int cpu);
extern void tasklet_init(struct tasklet_struct *t,
void (*func)(unsigned long), unsigned long data);
-#define TASKLET_DATA_TYPE unsigned long
-#define TASKLET_FUNC_TYPE void (*)(TASKLET_DATA_TYPE)
-
#define from_tasklet(var, callback_tasklet, tasklet_fieldname) \
container_of(callback_tasklet, typeof(*var), tasklet_fieldname)
diff --git a/kernel/backtracetest.c b/kernel/backtracetest.c
index a2a97fa3071b..b5b9e16f0083 100644
--- a/kernel/backtracetest.c
+++ b/kernel/backtracetest.c
@@ -23,7 +23,7 @@ static void backtrace_test_normal(void)
static DECLARE_COMPLETION(backtrace_work);
-static void backtrace_test_irq_callback(unsigned long data)
+static void backtrace_test_irq_callback(struct tasklet_struct *unused)
{
dump_stack();
complete(&backtrace_work);
diff --git a/kernel/debug/debug_core.c b/kernel/debug/debug_core.c
index f76d6f77dd5e..ceac3a21cf41 100644
--- a/kernel/debug/debug_core.c
+++ b/kernel/debug/debug_core.c
@@ -998,7 +998,7 @@ static void kgdb_unregister_callbacks(void)
* such as is the case with kgdboe, where calling a breakpoint in the
* I/O driver itself would be fatal.
*/
-static void kgdb_tasklet_bpt(unsigned long ing)
+static void kgdb_tasklet_bpt(struct tasklet_struct *unused)
{
kgdb_breakpoint();
atomic_set(&kgdb_break_tasklet_var, 0);
diff --git a/kernel/irq/resend.c b/kernel/irq/resend.c
index 98c04ca5fa43..7edb88afebb5 100644
--- a/kernel/irq/resend.c
+++ b/kernel/irq/resend.c
@@ -27,7 +27,7 @@ static DECLARE_BITMAP(irqs_resend, IRQ_BITMAP_BITS);
/*
* Run software resends of IRQ's
*/
-static void resend_irqs(unsigned long arg)
+static void resend_irqs(struct tasklet_struct *unused)
{
struct irq_desc *desc;
int irq;
diff --git a/net/atm/pppoatm.c b/net/atm/pppoatm.c
index 45d8e1d5d033..fe45fba20be2 100644
--- a/net/atm/pppoatm.c
+++ b/net/atm/pppoatm.c
@@ -101,9 +101,10 @@ static inline struct pppoatm_vcc *chan_to_pvcc(const struct ppp_channel *chan)
* doesn't want to be called in interrupt context, so we do it from
* a tasklet
*/
-static void pppoatm_wakeup_sender(unsigned long arg)
+static void pppoatm_wakeup_sender(struct tasklet_struct *t)
{
- ppp_output_wakeup((struct ppp_channel *) arg);
+ struct pppoatm_vcc *pvcc = from_tasklet(pvcc, t, wakeup_tasklet);
+ ppp_output_wakeup(&pvcc->chan);
}
static void pppoatm_release_cb(struct atm_vcc *atmvcc)
@@ -416,7 +417,7 @@ static int pppoatm_assign_vcc(struct atm_vcc *atmvcc, void __user *arg)
pvcc->chan.mtu = atmvcc->qos.txtp.max_sdu - PPP_HDRLEN -
(be.encaps == e_vc ? 0 : LLC_LEN);
pvcc->wakeup_tasklet = tasklet_proto;
- pvcc->wakeup_tasklet.data = (unsigned long) &pvcc->chan;
+ pvcc->wakeup_tasklet.data = (TASKLET_DATA_TYPE)&pvcc->wakeup_tasklet;
err = ppp_register_channel(&pvcc->chan);
if (err != 0) {
kfree(pvcc);
diff --git a/net/iucv/iucv.c b/net/iucv/iucv.c
index 9a2d023842fe..d186c76f63b6 100644
--- a/net/iucv/iucv.c
+++ b/net/iucv/iucv.c
@@ -127,7 +127,7 @@ static LIST_HEAD(iucv_task_queue);
/*
* The tasklet for fast delivery of iucv interrupts.
*/
-static void iucv_tasklet_fn(unsigned long);
+static void iucv_tasklet_fn(struct tasklet_struct);
static DECLARE_TASKLET(iucv_tasklet, iucv_tasklet_fn,0);
/*
@@ -1726,7 +1726,7 @@ static void iucv_message_pending(struct iucv_irq_data *data)
* iucv_external_interrupt, calls the appropriate action handler
* and then frees the buffer.
*/
-static void iucv_tasklet_fn(unsigned long ignored)
+static void iucv_tasklet_fn(struct tasklet_struct *unused)
{
typedef void iucv_irq_fn(struct iucv_irq_data *);
static iucv_irq_fn *irq_fn[] = {
diff --git a/sound/drivers/pcsp/pcsp_lib.c b/sound/drivers/pcsp/pcsp_lib.c
index 8f0f05bbc081..fbeeecaac8d4 100644
--- a/sound/drivers/pcsp/pcsp_lib.c
+++ b/sound/drivers/pcsp/pcsp_lib.c
@@ -26,7 +26,7 @@ MODULE_PARM_DESC(nforce_wa, "Apply NForce chipset workaround "
* Call snd_pcm_period_elapsed in a tasklet
* This avoids spinlock messes and long-running irq contexts
*/
-static void pcsp_call_pcm_elapsed(unsigned long priv)
+static void pcsp_call_pcm_elapsed(struct tasklet_struct *unused)
{
if (atomic_read(&pcsp_chip.timer_active)) {
struct snd_pcm_substream *substream;
--
2.23.0
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