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| author | Du, Changbin <changbin.du@intel.com> | 2016-11-11 10:31:37 +0800 |
|---|---|---|
| committer | Zhenyu Wang <zhenyuw@linux.intel.com> | 2016-11-14 18:06:43 +0800 |
| commit | f4b0c2860b530e06ddaa5b5df31ab4171ac6e9eb (patch) | |
| tree | e531b0b485e1e41013bf8486ce480797cec0ad0c /drivers/gpu/drm/i915/gvt/vgpu.c | |
| parent | 0427f06aec4222e0712b2efba1ac60ff56a1c336 (diff) | |
| download | linux-stable-f4b0c2860b530e06ddaa5b5df31ab4171ac6e9eb.tar.gz linux-stable-f4b0c2860b530e06ddaa5b5df31ab4171ac6e9eb.tar.bz2 linux-stable-f4b0c2860b530e06ddaa5b5df31ab4171ac6e9eb.zip | |
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>
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/vgpu.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/vgpu.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/gvt/vgpu.c b/drivers/gpu/drm/i915/gvt/vgpu.c index 3a15feadc1df..044125c0f407 100644 --- a/drivers/gpu/drm/i915/gvt/vgpu.c +++ b/drivers/gpu/drm/i915/gvt/vgpu.c @@ -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; |