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drm/radeon: add header comment for clarification to vce_v2_0_enable_mgcg()

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Add function header comment to make it clear that local variable sw_cg
is used for debugging and it should not be removed.

Addresses-Coverity-ID: 1198635
Cc: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Gustavo A. R. Silva 2017-06-29 12:38:37 -05:00 • committed by Alex Deucher
commit 0ed279877d
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/radeon/vce_v2_0.c
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@ -104,6 +104,10 @@ static void vce_v2_0_disable_cg(struct radeon_device *rdev)
WREG32(VCE_CGTT_CLK_OVERRIDE, 7);
}
/*
* Local variable sw_cg is used for debugging purposes, in case we
* ran into problems with dynamic clock gating. Don't remove it.
*/
void vce_v2_0_enable_mgcg(struct radeon_device *rdev, bool enable)
{
bool sw_cg = false;