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Commit 679fe80f authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/radeon/dpm: make sure dc performance level limits are valid (CI) 

Check to make sure the dc limits are valid before using them.
Some systems may not have a dc limits table.  In that case just
use the ac limits.  This fixes hangs on systems when the power
state is changed when on battery (dc) due to invalid performance
state parameters.

Should fix:
https://bugs.freedesktop.org/show_bug.cgi?id=68708



Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 1ff60ddb

drivers/gpu/drm/radeon/ci_dpm.c

+6 −0
Original line number Diff line number Diff line
@@ -5179,6 +5179,12 @@ int ci_dpm_init(struct radeon_device *rdev) 


	pi->uvd_power_gated = false;



	/* make sure dc limits are valid */

	if ((rdev->pm.dpm.dyn_state.max_clock_voltage_on_dc.sclk == 0) ||

	    (rdev->pm.dpm.dyn_state.max_clock_voltage_on_dc.mclk == 0))

		rdev->pm.dpm.dyn_state.max_clock_voltage_on_dc =

			rdev->pm.dpm.dyn_state.max_clock_voltage_on_ac;



	return 0;

}