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drm/amd/display: Restore should_update_pstate_support after bad revert

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[Why]
This function was mistakenly reverted as part of a legitimate revert. The
old version that was reverted to has bad logic, and is causing situations
where p-state change support is being toggled when it shouldn't be,
resulting in hangs.

Signed-off-by: Joshua Aberback <joshua.aberback@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Joshua Aberback 2019-09-12 13:14:52 -04:00 committed by Alex Deucher
parent f537d474df
commit 62f3abd153
1 changed files with 8 additions and 2 deletions
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10
drivers/gpu/drm/amd/display/dc/inc/hw/clk_mgr_internal.h
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@ -281,8 +281,14 @@ static inline bool should_set_clock(bool safe_to_lower, int calc_clk, int cur_cl
static inline bool should_update_pstate_support(bool safe_to_lower, bool calc_support, bool cur_support)
{
// Whenever we are transitioning pstate support, we always want to notify prior to committing state
return (calc_support != cur_support) ? !safe_to_lower : false;
if (cur_support != calc_support) {
if (calc_support == true && safe_to_lower)
return true;
else if (calc_support == false && !safe_to_lower)
return true;
}
return false;
}
int clk_mgr_helper_get_active_display_cnt(