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authorMichal Wajdeczko <[email protected]>2023-11-16 16:12:42 +0100
committerRodrigo Vivi <[email protected]>2023-12-21 11:44:39 -0500
commitcac74742faea603b288592be118b4f100ed2c863 (patch)
tree27a3dd6982637ef79f4036f3e1b742a2183453ba
parent1d087cb7d81f9a17760154eef5ac8b894428cdbe (diff)
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 <[email protected]> Reviewed-by: Matthew Brost <[email protected]> Signed-off-by: Rodrigo Vivi <[email protected]>
-rw-r--r--drivers/gpu/drm/xe/xe_guc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/xe/xe_guc.c b/drivers/gpu/drm/xe/xe_guc.c
index 56edcb2b0e45..6de2ab05bf4e 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;