From: Michal Wajdeczko Date: Thu, 16 Nov 2023 15:12:42 +0000 (+0100) Subject: drm/xe/guc: Use valid scratch register for posting read X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=cac74742faea603b288592be118b4f100ed2c863;p=linux.git drm/xe/guc: Use valid scratch register for posting read There are only 4 scratch registers VF_SW_FLAG(0..3) on each GuC. We shouldn't use non-existing register VF_SW_FLAG(4) for posting read. Signed-off-by: Michal Wajdeczko Reviewed-by: Matthew Brost Signed-off-by: Rodrigo Vivi --- diff --git a/drivers/gpu/drm/xe/xe_guc.c b/drivers/gpu/drm/xe/xe_guc.c index 56edcb2b0e452..6de2ab05bf4e1 100644 --- a/drivers/gpu/drm/xe/xe_guc.c +++ b/drivers/gpu/drm/xe/xe_guc.c @@ -615,7 +615,7 @@ int xe_guc_mmio_send_recv(struct xe_guc *guc, const u32 *request, u32 header, reply; struct xe_reg reply_reg = xe_gt_is_media_type(gt) ? MED_VF_SW_FLAG(0) : VF_SW_FLAG(0); - const u32 LAST_INDEX = VF_SW_FLAG_COUNT; + const u32 LAST_INDEX = VF_SW_FLAG_COUNT - 1; int ret; int i;