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drm/i915/gvt: fix mem leakage in setup_vgpu_mmio for vgpu reset 

Gvt gdrst handler handle_device_reset() invoke function
setup_vgpu_mmio() to reset mmio status. In this case,
the virtual mmio memory has been allocated already. The
new allocation just cause old mmio memory leakage.

Signed-off-by: Du, Changbin <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
This commit is contained in:
Du, Changbin 2016-11-11 10:31:37 +08:00 committed by Zhenyu Wang
parent 0427f06aec
commit f4b0c2860b
1 changed files with 7 additions and 3 deletions
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10
drivers/gpu/drm/i915/gvt/vgpu.c
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@ -46,9 +46,13 @@ int setup_vgpu_mmio(struct intel_vgpu *vgpu)
struct intel_gvt *gvt = vgpu->gvt;
const struct intel_gvt_device_info *info = &gvt->device_info;
vgpu->mmio.vreg = vzalloc(info->mmio_size * 2);
if (!vgpu->mmio.vreg)
return -ENOMEM;
if (vgpu->mmio.vreg)
memset(vgpu->mmio.vreg, 0, info->mmio_size * 2);
else {
vgpu->mmio.vreg = vzalloc(info->mmio_size * 2);
if (!vgpu->mmio.vreg)
return -ENOMEM;
}
vgpu->mmio.sreg = vgpu->mmio.vreg + info->mmio_size;