Quoting José Roberto de Souza (2019-08-08 01:49:35)
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index d760830cfd7b..3d1c30a82302 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -9432,6 +9432,8 @@ enum skl_power_gate {
> #define TGL_TRANS_DDI_PORT_MASK (0xf << TGL_TRANS_DDI_PORT_SHIFT)
> #define TRANS_DDI_SELECT_PORT(x) ((x) << TRANS_DDI_PORT_SHIFT)
> #define TGL_TRANS_DDI_SELECT_PORT(x) (((x) + 1) <<
> TGL_TRANS_DDI_PORT_SHIFT)
> +#define TRANS_DDI_FUNC_CTL_VAL_TO_PORT(val) (((val) &
> TRANS_DDI_PORT_MASK) >> TRANS_DDI_PORT_SHIFT)
> +#define TGL_TRANS_DDI_FUNC_CTL_VAL_TO_PORT(val) (((val) &
> TGL_TRANS_DDI_PORT_MASK >> TGL_TRANS_DDI_PORT_SHIFT) - 1)
drivers/gpu/drm/i915/display/intel_display.c:10361 haswell_get_ddi_port_state()
warn: shift has higher precedence than mask
I presume you wanted (((val) & mask) >> shift) - 1) but I'm not sure.
-Chris
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