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| author | Ilija Hadzic <ilijahadzic@gmail.com> | 2012-10-29 21:35:00 +0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2012-11-07 04:51:08 +0400 |
| commit | 0f1cb1bd94a9c967cd4ad3de51cfdabe61eb5dcc (patch) | |
| tree | 563f4c28f5049c3bec4ab0c1efaa147098062e46 | |
| parent | 3d70f8c617a436c7146ecb81df2265b4626dfe89 (diff) | |
| download | linux-0f1cb1bd94a9c967cd4ad3de51cfdabe61eb5dcc.tar.xz | |
drm: restore open_count if drm_setup fails
If drm_setup (called at first open) fails, the whole
open call has failed, so we should not keep the
open_count incremented.
Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com>
Cc: stable@vger.kernel.org
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
| -rw-r--r-- | drivers/gpu/drm/drm_fops.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c index 7ef1b673e1be..af68eca44abe 100644 --- a/drivers/gpu/drm/drm_fops.c +++ b/drivers/gpu/drm/drm_fops.c @@ -135,8 +135,11 @@ int drm_open(struct inode *inode, struct file *filp) retcode = drm_open_helper(inode, filp, dev); if (!retcode) { atomic_inc(&dev->counts[_DRM_STAT_OPENS]); - if (!dev->open_count++) + if (!dev->open_count++) { retcode = drm_setup(dev); + if (retcode) + dev->open_count--; + } } if (!retcode) { mutex_lock(&dev->struct_mutex); |