This is a note to let you know that I've just added the patch titled
drm: ast,cirrus,mgag200: use drm_can_sleep
to the 3.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-ast-cirrus-mgag200-use-drm_can_sleep.patch
and it can be found in the queue-3.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f4b4718b61d1d5a7442a4fd6863ea80c3a10e508 Mon Sep 17 00:00:00 2001
From: Dave Airlie <airlied@xxxxxxxxxx>
Date: Fri, 24 Jan 2014 09:50:18 +1000
Subject: drm: ast,cirrus,mgag200: use drm_can_sleep
From: Dave Airlie <airlied@xxxxxxxxxx>
commit f4b4718b61d1d5a7442a4fd6863ea80c3a10e508 upstream.
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.
Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/ast/ast_fb.c | 2 +-
drivers/gpu/drm/cirrus/cirrus_fbdev.c | 2 +-
drivers/gpu/drm/mgag200/mgag200_fb.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/gpu/drm/ast/ast_fb.c
+++ b/drivers/gpu/drm/ast/ast_fb.c
@@ -65,7 +65,7 @@ static void ast_dirty_update(struct ast_
* 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)
--- a/drivers/gpu/drm/cirrus/cirrus_fbdev.c
+++ b/drivers/gpu/drm/cirrus/cirrus_fbdev.c
@@ -39,7 +39,7 @@ static void cirrus_dirty_update(struct c
* 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)
--- a/drivers/gpu/drm/mgag200/mgag200_fb.c
+++ b/drivers/gpu/drm/mgag200/mgag200_fb.c
@@ -41,7 +41,7 @@ static void mga_dirty_update(struct mga_
* 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)
Patches currently in stable-queue which might be from airlied@xxxxxxxxxx are
queue-3.12/drm-mgag200-fix-typo-causing-bw-limits-to-be-ignored-on-some-chips.patch
queue-3.12/drm-ast-cirrus-mgag200-use-drm_can_sleep.patch
queue-3.12/drm-mgag200-ast-cirrus-fix-regression-with-drm_can_sleep-conversion.patch
queue-3.12/drm-mgag200-fix-oops-in-cursor-code.patch
queue-3.12/drm-vmwgfx-fix-regression-caused-by-drm-ttm-make-ttm-reservation-calls-behave-like-reservation-calls.patch
queue-3.12/drm-cirrus-correct-register-values-for-16bpp.patch
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