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drm/i915/gvt: fix error handing of tlb_control emulation 

Return ealier for a invalid access, else it would false set
tlb flag for RCS.

Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
This commit is contained in:
Changbin Du 2016-12-27 13:24:52 +08:00 committed by Zhenyu Wang
parent 3e70c5d6ea
commit a12010534d
1 changed files with 2 additions and 4 deletions
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6
drivers/gpu/drm/i915/gvt/handlers.c
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@ -1367,7 +1367,6 @@ static int ring_mode_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
static int gvt_reg_tlb_control_handler(struct intel_vgpu *vgpu,
unsigned int offset, void *p_data, unsigned int bytes)
{
int rc = 0;
unsigned int id = 0;
write_vreg(vgpu, offset, p_data, bytes);
@ -1390,12 +1389,11 @@ static int gvt_reg_tlb_control_handler(struct intel_vgpu *vgpu,
id = VECS;
break;
default:
rc = -EINVAL;
break;
return -EINVAL;
}
set_bit(id, (void *)vgpu->tlb_handle_pending);
return rc;
return 0;
}
static int ring_reset_ctl_write(struct intel_vgpu *vgpu,