提交 8bcad07a 编写于 作者: Z Zhenyu Wang 提交者: Dave Airlie

drm/i915/gvt: fix error return check for copy_gma_to_hva()

From commit 73dec95e ("drm/i915: Emit to ringbuffer directly"),
copy_gma_to_hva() now returns copied data length instead of 0, so
need to change error return check for that.

Note: Looks this is caused by backmerge conflict resolving, so
4.11-rc4 is not impacted as commit 73dec95e ("drm/i915: Emit to
ringbuffer directly") is not in 4.11. But need to fix this before I
can apply 4.12 stuff against drm-intel-next correctly.

Fixes: e5c1ff14 ("Backmerge tag 'v4.11-rc4' into drm-next")
Cc: Dave Airlie <airlied@redhat.com>
Cc: Tina Zhang <tina.zhang@intel.com>
Signed-off-by: NZhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>
上级 e5c1ff14
......@@ -1673,7 +1673,7 @@ static int perform_bb_shadow(struct parser_exec_state *s)
ret = copy_gma_to_hva(s->vgpu, s->vgpu->gtt.ggtt_mm,
gma, gma + bb_size,
dst);
if (ret) {
if (ret < 0) {
gvt_vgpu_err("fail to copy guest ring buffer\n");
goto unmap_src;
}
......@@ -2666,7 +2666,7 @@ static int shadow_workload_ring_buffer(struct intel_vgpu_workload *workload)
if (gma_head > gma_tail) {
ret = copy_gma_to_hva(vgpu, vgpu->gtt.ggtt_mm,
gma_head, gma_top, cs);
if (ret) {
if (ret < 0) {
gvt_vgpu_err("fail to copy guest ring buffer\n");
return ret;
}
......@@ -2676,7 +2676,7 @@ static int shadow_workload_ring_buffer(struct intel_vgpu_workload *workload)
/* copy head or start <-> tail */
ret = copy_gma_to_hva(vgpu, vgpu->gtt.ggtt_mm, gma_head, gma_tail, cs);
if (ret) {
if (ret < 0) {
gvt_vgpu_err("fail to copy guest ring buffer\n");
return ret;
}
......@@ -2737,7 +2737,7 @@ static int shadow_indirect_ctx(struct intel_shadow_wa_ctx *wa_ctx)
wa_ctx->workload->vgpu->gtt.ggtt_mm,
guest_gma, guest_gma + ctx_size,
map);
if (ret) {
if (ret < 0) {
gvt_vgpu_err("fail to copy guest indirect ctx\n");
goto unmap_src;
}
......
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