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drm/i915/gvt: Fix shift for cmd data size

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This is to fix smatch warning on

     drivers/gpu/drm/i915/gvt/cmd_parser.c:1421 cmd_handler_mi_op_2f()
     warn: shift has higher precedence than mask

We need bits 20-19 mask for data size.

Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
This commit is contained in:
Zhenyu Wang 2016-10-27 17:30:13 +08:00
parent e95433c73a
commit 173bcc6018
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/gvt/cmd_parser.c
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@ -1418,8 +1418,8 @@ static int cmd_handler_mi_op_2e(struct parser_exec_state *s)
static int cmd_handler_mi_op_2f(struct parser_exec_state *s)
{
int gmadr_bytes = s->vgpu->gvt->device_info.gmadr_bytes_in_cmd;
int op_size = ((1 << (cmd_val(s, 0) & GENMASK(20, 19) >> 19)) *
sizeof(u32));
int op_size = (1 << ((cmd_val(s, 0) & GENMASK(20, 19)) >> 19)) *
sizeof(u32);
unsigned long gma, gma_high;
int ret = 0;