drm/arm/hdlcd: Actually validate CRTC modes

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Rather than allowing any old mode through, then subsequently refusing
unmatchable clock rates in atomic_check when it's too late to back out
and pick a different mode, let's do that validation up-front where it
will cause unsupported modes to be correctly pruned in the first place.

This also eliminates an issue whereby a perceived clock rate of 0 would
cause atomic disable to fail and prevent the module from being unloaded.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>

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Robin Murphy 2019-05-17 17:37:21 +01:00 • committed by Liviu Dudau

parent 6a88e0c148

commit b96151edce

1 changed files with 5 additions and 6 deletions

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drivers/gpu/drm/arm/hdlcd_crtc.c

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