From 310bf25df2fcccc1d91f96928adb66bdc26613b5 Mon Sep 17 00:00:00 2001
From: Ramalingam C <ramalingam.c@intel.com>
Date: Tue, 5 Apr 2022 20:38:35 +0530
Subject: [PATCH] drm/i915/gt: Pass the -EINVAL when emit_pte doesn't update
any PTE
When emit_pte doesn't update any PTE with return value as 0, interpret
it as -EINVAL.
v2:
Add missing goto [Thomas]
Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
Reviewed-by: Thomas Hellstrom <thomas.hellstrom@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220405150840.29351-5-ramalingam.c@intel.com
---
drivers/gpu/drm/i915/gt/intel_migrate.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_migrate.c b/drivers/gpu/drm/i915/gt/intel_migrate.c
index e0f1c727662e5..6378d4450e1ae 100644
--- a/drivers/gpu/drm/i915/gt/intel_migrate.c
+++ b/drivers/gpu/drm/i915/gt/intel_migrate.c
@@ -577,7 +577,11 @@ intel_context_migrate_copy(struct intel_context *ce,
len = emit_pte(rq, &it_src, src_cache_level, src_is_lmem,
src_offset, CHUNK_SZ);
- if (len <= 0) {
+ if (!len) {
+ err = -EINVAL;
+ goto out_rq;
+ }
+ if (len < 0) {
err = len;
goto out_rq;
}
--
2.30.2