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drm/amd/display: add warning on long reg_wait

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Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Dmytro Laktyushkin 2017-11-02 14:55:14 -04:00 committed by Alex Deucher
parent 33af27bb11
commit 42cf181b59
1 changed files with 6 additions and 1 deletions
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7
drivers/gpu/drm/amd/display/dc/dc_helper.c
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@ -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",