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| author | Ilija Hadzic <ilijahadzic@gmail.com> | 2012-10-29 17:35:00 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-11-17 13:14:22 -0800 |
| commit | 356c93d57c40513a321380f274560504a0778c6b (patch) | |
| tree | 6a0d02a876ffe3c9a327d172c03297e9f445583a | |
| parent | 4d02840c82b479b4a4c316bd279e1a83649e59ed (diff) | |
| download | linux-stable-356c93d57c40513a321380f274560504a0778c6b.tar.gz linux-stable-356c93d57c40513a321380f274560504a0778c6b.tar.bz2 linux-stable-356c93d57c40513a321380f274560504a0778c6b.zip | |
drm: restore open_count if drm_setup fails
commit 0f1cb1bd94a9c967cd4ad3de51cfdabe61eb5dcc upstream.
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>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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 c42e12cc2ddb..72fa601d4c47 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); |