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-rw-r--r--drivers/gpu/drm/nouveau/nvd0_display.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/nvd0_display.c b/drivers/gpu/drm/nouveau/nvd0_display.c
index 5e2b79bdcae0..421d301b3797 100644
--- a/drivers/gpu/drm/nouveau/nvd0_display.c
+++ b/drivers/gpu/drm/nouveau/nvd0_display.c
@@ -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);
}