From: Nikola Cornij Date: Fri, 27 Apr 2018 21:26:25 +0000 (-0400) Subject: drm/amd/display: Clear underflow status for debug purposes X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=a944744ba517256fcc9311e12c083563cbbe7c88;p=linux.git drm/amd/display: Clear underflow status for debug purposes We want to keep underflow sticky bit on for the longevity tests outside of test environment. For debug purposes it is, however, useful to clear underflow status after the test that caused it so that the following tests are not affected. This change fullfils both requirements by clearing the underflow only from within Windows or Diags test environment. Signed-off-by: Nikola Cornij Reviewed-by: Nikola Cornij Acked-by: Harry Wentland Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c index c452972bf1c33..f8e0576af6e0b 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c @@ -326,6 +326,12 @@ void dcn10_log_hw_state(struct dc *dc) s.h_total, s.v_total, s.underflow_occurred_status); + + // Clear underflow for debug purposes + // We want to keep underflow sticky bit on for the longevity tests outside of test environment. + // This function is called only from Windows or Diags test environment, hence it's safe to clear + // it from here without affecting the original intent. + tg->funcs->clear_optc_underflow(tg); } DTN_INFO("\n");