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authorBen Skeggs <bskeggs@redhat.com>2013-11-14 08:31:26 +1000
committerBen Skeggs <bskeggs@redhat.com>2013-11-14 14:57:02 +1000
commit35c336707f51f6336c9cb8a60b6f1aa5a3099ad7 (patch)
tree5739c0814cb5f96352b3243a339aff0a4abf4c73 /drivers
parent09dacc7bb0c2f32427d926844fca7d5fecec005c (diff)
downloadlinux-35c336707f51f6336c9cb8a60b6f1aa5a3099ad7.tar.bz2
drm/nouveau/pwr: fix missing mutex unlock in a failure path
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/pwr/base.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/pwr/base.c b/drivers/gpu/drm/nouveau/core/subdev/pwr/base.c
index 9908f1f05a00..d4fd3bc9c66f 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/pwr/base.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/pwr/base.c
@@ -32,6 +32,11 @@ nouveau_pwr_send(struct nouveau_pwr *ppwr, u32 reply[2],
struct nouveau_subdev *subdev = nv_subdev(ppwr);
u32 addr;
+ /* wait for a free slot in the fifo */
+ addr = nv_rd32(ppwr, 0x10a4a0);
+ if (!nv_wait_ne(ppwr, 0x10a4b0, 0xffffffff, addr ^ 8))
+ return -EBUSY;
+
/* we currently only support a single process at a time waiting
* on a synchronous reply, take the PPWR mutex and tell the
* receive handler what we're waiting for
@@ -42,11 +47,6 @@ nouveau_pwr_send(struct nouveau_pwr *ppwr, u32 reply[2],
ppwr->recv.process = process;
}
- /* wait for a free slot in the fifo */
- addr = nv_rd32(ppwr, 0x10a4a0);
- if (!nv_wait_ne(ppwr, 0x10a4b0, 0xffffffff, addr ^ 8))
- return -EBUSY;
-
/* acquire data segment access */
do {
nv_wr32(ppwr, 0x10a580, 0x00000001);