drm/i915: Parametrize UOS_RSA_SCRATCH

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_guc_reg.h

@@ -41,7 +41,7 @@
 
 #define SOFT_SCRATCH(n)			(0xc180 + ((n) * 4))
 
-#define UOS_RSA_SCRATCH_0		0xc200
+#define UOS_RSA_SCRATCH(i)		(0xc200 + (i) * 4)
 #define DMA_ADDR_0_LOW			0xc300
 #define DMA_ADDR_0_HIGH			0xc304
 #define DMA_ADDR_1_LOW			0xc308

drivers/gpu/drm/i915/intel_guc_loader.c

@@ -258,7 +258,7 @@ static int guc_ucode_xfer_dma(struct drm_i915_private *dev_priv)
 	/* Copy RSA signature from the fw image to HW for verification */
 	sg_pcopy_to_buffer(sg->sgl, sg->nents, rsa, UOS_RSA_SIG_SIZE, offset);
 	for (i = 0; i < UOS_RSA_SIG_SIZE / sizeof(u32); i++)
-		I915_WRITE(UOS_RSA_SCRATCH_0 + i * sizeof(u32), rsa[i]);
+		I915_WRITE(UOS_RSA_SCRATCH(i), rsa[i]);
 
 	/* Set the source address for the new blob */
 	offset = i915_gem_obj_ggtt_offset(fw_obj);