diff options
| author | Damien Lespiau <damien.lespiau@intel.com> | 2013-10-15 18:55:41 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-10-16 13:32:16 +0200 |
| commit | be5c7a90753fb9f74c867f74489abe822ffb4b26 (patch) | |
| tree | e7665ab0062b809aff494308f19643ea99827238 /drivers/gpu/drm/i915/i915_drv.h | |
| parent | 071444280bcbb96ec38a1fb1ee3924ca7860844a (diff) | |
drm/i915: Only one open() allowed on pipe CRC result files
It doesn't really make sense to have two processes dequeueing the CRC
values at the same time. Forbid that usage.
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 7408f118434..9aeddc0b27b 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1232,6 +1232,7 @@ struct intel_pipe_crc_entry { #define INTEL_PIPE_CRC_ENTRIES_NR 128 struct intel_pipe_crc { + atomic_t available; /* exclusive access to the device */ struct intel_pipe_crc_entry *entries; enum intel_pipe_crc_source source; atomic_t head, tail; |