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drm: ast,cirrus,mgag200: use drm_can_sleep

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these 3 were checking in_interrupt but we have situations where
calling vunmap under this could cause a BUG to be hit in
smp_call_function_many. Use the drm_can_sleep macro instead,
which should stop this path from been taken in this case.

Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2014-01-24 09:50:18 +10:00
parent 821b4db3b6
commit f4b4718b61
3 changed files with 3 additions and 3 deletions
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2
drivers/gpu/drm/ast/ast_fb.c
View File

@ -65,7 +65,7 @@ static void ast_dirty_update(struct ast_fbdev *afbdev,
* then the BO is being moved and we should
* store up the damage until later.
*/
if (!in_interrupt())
if (!drm_can_sleep())
ret = ast_bo_reserve(bo, true);
if (ret) {
if (ret != -EBUSY)

2
drivers/gpu/drm/cirrus/cirrus_fbdev.c
View File

@ -39,7 +39,7 @@ static void cirrus_dirty_update(struct cirrus_fbdev *afbdev,
* then the BO is being moved and we should
* store up the damage until later.
*/
if (!in_interrupt())
if (!drm_can_sleep())
ret = cirrus_bo_reserve(bo, true);
if (ret) {
if (ret != -EBUSY)

2
drivers/gpu/drm/mgag200/mgag200_fb.c
View File

@ -41,7 +41,7 @@ static void mga_dirty_update(struct mga_fbdev *mfbdev,
* then the BO is being moved and we should
* store up the damage until later.
*/
if (!in_interrupt())
if (!drm_can_sleep())
ret = mgag200_bo_reserve(bo, true);
if (ret) {
if (ret != -EBUSY)