Commit 29af7605 authored by Konrad Dybcio's avatar Konrad Dybcio Committed by Rob Clark
Browse files

drm/msm/a6xx: Skip empty protection ranges entries 



Some specific SKUs leave certain protection range registers empty.
Allow for that behavior.

Signed-off-by: default avatarKonrad Dybcio <konrad.dybcio@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/543334/


Signed-off-by: default avatarRob Clark <robdclark@chromium.org>
parent 02a726fc

drivers/gpu/drm/msm/adreno/a6xx_gpu.c

+5 −2
Original line number Diff line number Diff line
@@ -935,8 +935,11 @@ static void a6xx_set_cp_protect(struct msm_gpu *gpu) 
		  A6XX_CP_PROTECT_CNTL_ACCESS_FAULT_ON_VIOL_EN |

		  A6XX_CP_PROTECT_CNTL_LAST_SPAN_INF_RANGE);



	for (i = 0; i < count - 1; i++)

	for (i = 0; i < count - 1; i++) {

		/* Intentionally skip writing to some registers */

		if (regs[i])

			gpu_write(gpu, REG_A6XX_CP_PROTECT(i), regs[i]);

	}

	/* last CP_PROTECT to have "infinite" length on the last entry */

	gpu_write(gpu, REG_A6XX_CP_PROTECT(count_max - 1), regs[i]);

}