drm/i915: Keep the CRC values into a circular buffer

There are a few good properties to a circular buffer, for instance it
has a number of entries (before we were always dumping the full buffer).

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index bfaaaaee8a5b..a29a4a1d300a 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1230,11 +1230,11 @@ struct intel_pipe_crc_entry {
         uint32_t crc[5];
 };
 
-#define INTEL_PIPE_CRC_ENTRIES_NR       200
+#define INTEL_PIPE_CRC_ENTRIES_NR       128
 struct intel_pipe_crc {
         struct intel_pipe_crc_entry entries[INTEL_PIPE_CRC_ENTRIES_NR];
         enum intel_pipe_crc_source source;
-        atomic_t slot;
+        atomic_t head, tail;
 };
 
 typedef struct drm_i915_private {