| Message ID | 20231113033613.30339-1-heminhong@kylinos.cn (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/i915: eliminate warnings | expand |
On Mon, Nov 13, 2023 at 11:36:13AM +0800, heminhong wrote: > 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. A good catch. But this patch deserves a better commit subject since it is not just fixing 'warnings' but the behavior of this function accounts on the -1 that is explicitly given as input in some cases. > > Signed-off-by: heminhong <heminhong@kylinos.cn> also perhaps: Fixes: f83b94d23770 ("drm/i915/dsb: Use DEwake to combat PkgC latency") Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Uma Shankar <uma.shankar@intel.com> ? > --- > 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 >
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);
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 <heminhong@kylinos.cn> --- drivers/gpu/drm/i915/display/intel_dsb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)