openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/i915: Reject opening of pipe crc files for invalid pipes 

We don't init the lock nor set up all the other state. And it doesn't
make sense anyway.

This appeases lockdep when running the igt/drv_debugfs_reader test.

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2013-11-14 11:30:43 +01:00
parent b378360e8f
commit 7eb1c496f7
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/i915/i915_debugfs.c
View File

@ -1771,6 +1771,9 @@ static int i915_pipe_crc_open(struct inode *inode, struct file *filep)
struct drm_i915_private *dev_priv = info->dev->dev_private;
struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[info->pipe];
if (info->pipe >= INTEL_INFO(info->dev)->num_pipes)
return -ENODEV;
spin_lock_irq(&pipe_crc->lock);
if (pipe_crc->opened) {