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Commit dd62608b authored by Ben Skeggs's avatar Ben Skeggs
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drm/nvd0/disp: ignore clock set if no pclk 



This happens somehow during init on a machine I have, and leads to a
divide-by-zero.

Lets avoid that...

Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent 27100ac9

drivers/gpu/drm/nouveau/nvd0_display.c

+3 −1
Original line number Diff line number Diff line
@@ -1661,7 +1661,9 @@ nvd0_display_unk2_handler(struct drm_device *dev, u32 crtc, u32 mask) 
	}



	pclk = nv_rd32(dev, 0x660450 + (crtc * 0x300)) / 1000;

	if (mask & 0x00010000) {

	NV_DEBUG_KMS(dev, "PDISP: crtc %d pclk %d mask 0x%08x\n",

			  crtc, pclk, mask);

	if (pclk && (mask & 0x00010000)) {

		nv50_crtc_set_clock(dev, crtc, pclk);

	}