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Message-Id: <20200107192555.20606-3-tli@digitalocean.com>
Date: Tue, 7 Jan 2020 13:25:55 -0600
From: Tianlin Li <tli@...italocean.com>
To: kernel-hardening@...ts.openwall.com,
keescook@...omium.org
Cc: Alex Deucher <alexander.deucher@....com>,
christian.koenig@....com,
David1.Zhou@....com,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
amd-gfx@...ts.freedesktop.org,
dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org,
Tianlin Li <tli@...italocean.com>
Subject: [PATCH 2/2] drm/radeon: change call sites to handle return value properly.
Ideally, the failure of set_memory_*() should be passed up the call stack,
and callers should examine the failure and deal with it. Fix those call
sites in drm/radeon to handle retval properly.
Since fini functions are always void, print errors for the failures.
Signed-off-by: Tianlin Li <tli@...italocean.com>
---
drivers/gpu/drm/radeon/r100.c | 3 ++-
drivers/gpu/drm/radeon/rs400.c | 3 ++-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
index 110fb38004b1..7eafe15ba124 100644
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -706,7 +706,8 @@ void r100_pci_gart_fini(struct radeon_device *rdev)
{
radeon_gart_fini(rdev);
r100_pci_gart_disable(rdev);
- radeon_gart_table_ram_free(rdev);
+ if (radeon_gart_table_ram_free(rdev))
+ DRM_ERROR("radeon: failed free system ram for GART page table.\n");
}
int r100_irq_set(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/rs400.c b/drivers/gpu/drm/radeon/rs400.c
index 117f60af1ee4..de3674f5fe23 100644
--- a/drivers/gpu/drm/radeon/rs400.c
+++ b/drivers/gpu/drm/radeon/rs400.c
@@ -210,7 +210,8 @@ void rs400_gart_fini(struct radeon_device *rdev)
{
radeon_gart_fini(rdev);
rs400_gart_disable(rdev);
- radeon_gart_table_ram_free(rdev);
+ if (radeon_gart_table_ram_free(rdev))
+ DRM_ERROR("radeon: failed free system ram for GART page table.\n");
}
#define RS400_PTE_UNSNOOPED (1 << 0)
--
2.17.1
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