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 --- drivers/gpu/drm/drm_fops.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c index 7ef1b67..af68eca 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);