Current, the dewake_scanline variable is defined as unsigned int,
an unsigned int variable that is always greater than or equal to 0.
when _intel_dsb_commit function is called by intel_dsb_commit function,
the dewake_scanline variable may have an int value.
So the dewake_scanline variable is necessary to defined as an int.

Signed-off-by: heminhong <heminh...@kylinos.cn>
---
 drivers/gpu/drm/i915/display/intel_dsb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dsb.c 
b/drivers/gpu/drm/i915/display/intel_dsb.c
index 78b6fe24dcd8..7fd6280c54a7 100644
--- a/drivers/gpu/drm/i915/display/intel_dsb.c
+++ b/drivers/gpu/drm/i915/display/intel_dsb.c
@@ -340,7 +340,7 @@ static int intel_dsb_dewake_scanline(const struct 
intel_crtc_state *crtc_state)
 }
 
 static void _intel_dsb_commit(struct intel_dsb *dsb, u32 ctrl,
-                             unsigned int dewake_scanline)
+                             int dewake_scanline)
 {
        struct intel_crtc *crtc = dsb->crtc;
        struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-- 
2.25.1

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