Op 18-04-18 om 17:37 schreef Ville Syrjälä:
> On Wed, Apr 18, 2018 at 02:51:21PM +0200, Maarten Lankhorst wrote:
>> This reduces the amount of spam when you debug a CRC reading
>> program.
>>
>> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
>> ---
>> drivers/gpu/drm/drm_debugfs_crc.c | 9 ++++++++-
>> include/drm/drm_debugfs_crc.h | 3 ++-
>> 2 files changed, 10 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/drm_debugfs_crc.c b/drivers/gpu/drm/drm_debugfs_crc.c
>> index 9f8312137cad..5a052c511e62 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 overflow = crc->overflow;
> 'was_overflow' or something to indicate this is the old value?
>
>> +
>> + crc->overflow = true;
>> spin_unlock(&crc->lock);
>> - DRM_ERROR("Overflow of CRC buffer, userspace reads too slow.\n");
>> +
>> + if (!overflow)
>> + DRM_ERROR("Overflow of CRC buffer, userspace reads too slow.\n");
> would make this a bit less confusing perhaps. Now it reads as
> "if (no overflow) DRM_ERROR("we have an overflow");" which makes no
> sense on the first glance.
>
> Apart from that
> Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Thanks, fixed and pushed to drm-misc-next. :)
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