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drm/i915/gvt: Refine error handling for perform_bb_shadow

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fix the wrong return type and return error once the unknown
command is scanned.

v2:
- separate this error handle from healthy rating code. (Zhenyu)

Signed-off-by: fred gao <fred.gao@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
This commit is contained in:
fred gao 2017-08-18 15:41:11 +08:00 committed by Zhenyu Wang
parent 0f43702a33
commit 1e3197d6ad
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/i915/gvt/cmd_parser.c
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@ -1576,11 +1576,11 @@ static int batch_buffer_needs_scan(struct parser_exec_state *s)
return 1;
}
static uint32_t find_bb_size(struct parser_exec_state *s)
static int find_bb_size(struct parser_exec_state *s)
{
unsigned long gma = 0;
struct cmd_info *info;
uint32_t bb_size = 0;
int bb_size = 0;
uint32_t cmd_len = 0;
bool met_bb_end = false;
struct intel_vgpu *vgpu = s->vgpu;
@ -1637,6 +1637,8 @@ static int perform_bb_shadow(struct parser_exec_state *s)
/* get the size of the batch buffer */
bb_size = find_bb_size(s);
if (bb_size < 0)
return -EINVAL;
/* allocate shadow batch buffer */
entry_obj = kmalloc(sizeof(*entry_obj), GFP_KERNEL);