[PATCH] drm/i915/gvt: do not check len & max_len for lri
Yan Zhao
yan.y.zhao at intel.com
Wed Mar 4 09:51:21 UTC 2020
lri ususally of variable len and far exceeding 127 dwords.
Fixes: 00a33be40634 (drm/i915/gvt: Add valid length check for MI variable
commands)
Signed-off-by: Yan Zhao <yan.y.zhao at intel.com>
---
drivers/gpu/drm/i915/gvt/cmd_parser.c | 12 ------------
1 file changed, 12 deletions(-)
diff --git a/drivers/gpu/drm/i915/gvt/cmd_parser.c b/drivers/gpu/drm/i915/gvt/cmd_parser.c
index 73a2891114a4..151fea215e5c 100644
--- a/drivers/gpu/drm/i915/gvt/cmd_parser.c
+++ b/drivers/gpu/drm/i915/gvt/cmd_parser.c
@@ -965,18 +965,6 @@ static int cmd_handler_lri(struct parser_exec_state *s)
int i, ret = 0;
int cmd_len = cmd_length(s);
struct intel_gvt *gvt = s->vgpu->gvt;
- u32 valid_len = CMD_LEN(1);
-
- /*
- * Official intel docs are somewhat sloppy , check the definition of
- * MI_LOAD_REGISTER_IMM.
- */
- #define MAX_VALID_LEN 127
- if ((cmd_len < valid_len) || (cmd_len > MAX_VALID_LEN)) {
- gvt_err("len is not valid: len=%u valid_len=%u\n",
- cmd_len, valid_len);
- return -EFAULT;
- }
for (i = 1; i < cmd_len; i += 2) {
if (IS_BROADWELL(gvt->dev_priv) && s->ring_id != RCS0) {
--
2.17.1
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