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path: root/drivers/gpu/drm/drm_debugfs_crc.c
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Diffstat (limited to 'drivers/gpu/drm/drm_debugfs_crc.c')
-rw-r--r--drivers/gpu/drm/drm_debugfs_crc.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_debugfs_crc.c b/drivers/gpu/drm/drm_debugfs_crc.c
index 9f8312137cad..99961192bf03 100644
--- a/drivers/gpu/drm/drm_debugfs_crc.c
+++ b/drivers/gpu/drm/drm_debugfs_crc.c
@@ -139,6 +139,7 @@ static int crtc_crc_data_count(struct drm_crtc_crc *crc)
static void crtc_crc_cleanup(struct drm_crtc_crc *crc)
{
kfree(crc->entries);
+ crc->overflow = false;
crc->entries = NULL;
crc->head = 0;
crc->tail = 0;
@@ -391,8 +392,14 @@ int drm_crtc_add_crc_entry(struct drm_crtc *crtc, bool has_frame,
tail = crc->tail;
if (CIRC_SPACE(head, tail, DRM_CRC_ENTRIES_NR) < 1) {
+ bool was_overflow = crc->overflow;
+
+ crc->overflow = true;
spin_unlock(&crc->lock);
- DRM_ERROR("Overflow of CRC buffer, userspace reads too slow.\n");
+
+ if (!was_overflow)
+ DRM_ERROR("Overflow of CRC buffer, userspace reads too slow.\n");
+
return -ENOBUFS;
}