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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-14 14:48:31 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-14 14:48:31 -0700 |
| commit | d1794f2c5b5817eb79ccc5e00701ca748d1b073a (patch) | |
| tree | 5a4c98e694e88a8c82f342d0cc9edb2a4cbbef36 /drivers/gpu | |
| parent | a41eebab7537890409ea9dfe0fcda9b5fbdb090d (diff) | |
| parent | 2fceef397f9880b212a74c418290ce69e7ac00eb (diff) | |
| download | linux-d1794f2c5b5817eb79ccc5e00701ca748d1b073a.tar.gz | |
Merge branch 'bkl-removal' of git://git.lwn.net/linux-2.6
* 'bkl-removal' of git://git.lwn.net/linux-2.6: (146 commits) IB/umad: BKL is not needed for ib_umad_open() IB/uverbs: BKL is not needed for ib_uverbs_open() bf561-coreb: BKL unneeded for open() Call fasync() functions without the BKL snd/PCM: fasync BKL pushdown ipmi: fasync BKL pushdown ecryptfs: fasync BKL pushdown Bluetooth VHCI: fasync BKL pushdown tty_io: fasync BKL pushdown tun: fasync BKL pushdown i2o: fasync BKL pushdown mpt: fasync BKL pushdown Remove BKL from remote_llseek v2 Make FAT users happier by not deadlocking x86-mce: BKL pushdown vmwatchdog: BKL pushdown vmcp: BKL pushdown via-pmu: BKL pushdown uml-random: BKL pushdown uml-mmapper: BKL pushdown ...
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/drm_fops.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c index d2e6da85f58a..851a53f1acce 100644 --- a/drivers/gpu/drm/drm_fops.c +++ b/drivers/gpu/drm/drm_fops.c @@ -37,6 +37,7 @@ #include "drmP.h" #include "drm_sarea.h" #include <linux/poll.h> +#include <linux/smp_lock.h> static int drm_open_helper(struct inode *inode, struct file *filp, struct drm_device * dev); @@ -174,12 +175,14 @@ int drm_stub_open(struct inode *inode, struct file *filp) DRM_DEBUG("\n"); + /* BKL pushdown: note that nothing else serializes idr_find() */ + lock_kernel(); minor = idr_find(&drm_minors_idr, minor_id); if (!minor) - return -ENODEV; + goto out; if (!(dev = minor->dev)) - return -ENODEV; + goto out; old_fops = filp->f_op; filp->f_op = fops_get(&dev->driver->fops); @@ -189,6 +192,8 @@ int drm_stub_open(struct inode *inode, struct file *filp) } fops_put(old_fops); +out: + unlock_kernel(); return err; } |