From aaefbca5879edfe949431ab174d2fc4b0bb6a6a5 Mon Sep 17 00:00:00 2001 From: Dmytro Laktyushkin Date: Thu, 2 Nov 2017 14:55:14 -0400 Subject: [PATCH 2724/4131] drm/amd/display: add warning on long reg_wait Signed-off-by: Dmytro Laktyushkin Reviewed-by: Tony Cheng Acked-by: Harry Wentland Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/dc_helper.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dc_helper.c b/drivers/gpu/drm/amd/display/dc/dc_helper.c index 0d84b2a..c584252 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_helper.c +++ b/drivers/gpu/drm/amd/display/dc/dc_helper.c @@ -156,8 +156,13 @@ uint32_t generic_reg_wait(const struct dc_context *ctx, field_value = get_reg_field_value_ex(reg_val, mask, shift); - if (field_value == condition_value) + if (field_value == condition_value) { + if (i * delay_between_poll_us > 1000) + dm_output_to_console("REG_WAIT taking a while: %dms in %s line:%d\n", + delay_between_poll_us * i / 1000, + func_name, line); return reg_val; + } } dm_error("REG_WAIT timeout %dus * %d tries - %s line:%d\n", -- 2.7.4