diff options
| author | David S. Miller <davem@davemloft.net> | 2010-04-11 23:53:53 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-04-11 23:53:53 +0200 |
| commit | 871039f02f8ec4ab2e5e9010718caa8e085786f1 (patch) | |
| tree | f0d2b3127fc48c862967d68c46c2d46668137515 /drivers/gpu/drm/drm_fops.c | |
| parent | xfrm: Fix crashes in xfrm_lookup() (diff) | |
| parent | Merge branch 'master' of /home/davem/src/GIT/linux-2.6/ (diff) | |
| download | linux-871039f02f8ec4ab2e5e9010718caa8e085786f1.tar.xz linux-871039f02f8ec4ab2e5e9010718caa8e085786f1.zip | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/stmmac/stmmac_main.c
drivers/net/wireless/wl12xx/wl1271_cmd.c
drivers/net/wireless/wl12xx/wl1271_main.c
drivers/net/wireless/wl12xx/wl1271_spi.c
net/core/ethtool.c
net/mac80211/scan.c
Diffstat (limited to 'drivers/gpu/drm/drm_fops.c')
| -rw-r--r-- | drivers/gpu/drm/drm_fops.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c index 08d14df3bb42..9d532d7fdf59 100644 --- a/drivers/gpu/drm/drm_fops.c +++ b/drivers/gpu/drm/drm_fops.c @@ -36,6 +36,7 @@ #include "drmP.h" #include <linux/poll.h> +#include <linux/slab.h> #include <linux/smp_lock.h> static int drm_open_helper(struct inode *inode, struct file *filp, @@ -140,14 +141,16 @@ int drm_open(struct inode *inode, struct file *filp) spin_unlock(&dev->count_lock); } out: - mutex_lock(&dev->struct_mutex); - if (minor->type == DRM_MINOR_LEGACY) { - BUG_ON((dev->dev_mapping != NULL) && - (dev->dev_mapping != inode->i_mapping)); - if (dev->dev_mapping == NULL) - dev->dev_mapping = inode->i_mapping; + if (!retcode) { + mutex_lock(&dev->struct_mutex); + if (minor->type == DRM_MINOR_LEGACY) { + if (dev->dev_mapping == NULL) + dev->dev_mapping = inode->i_mapping; + else if (dev->dev_mapping != inode->i_mapping) + retcode = -ENODEV; + } + mutex_unlock(&dev->struct_mutex); } - mutex_unlock(&dev->struct_mutex); return retcode; } |