diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/kvmgt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/kvmgt.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c index 8a428678e4b5..520fe3d0a882 100644 --- a/drivers/gpu/drm/i915/gvt/kvmgt.c +++ b/drivers/gpu/drm/i915/gvt/kvmgt.c @@ -184,7 +184,7 @@ static struct gvt_dma *__gvt_cache_find_gfn(struct intel_vgpu *vgpu, gfn_t gfn) return NULL; } -static void __gvt_cache_add(struct intel_vgpu *vgpu, gfn_t gfn, +static int __gvt_cache_add(struct intel_vgpu *vgpu, gfn_t gfn, dma_addr_t dma_addr) { struct gvt_dma *new, *itr; @@ -192,7 +192,7 @@ static void __gvt_cache_add(struct intel_vgpu *vgpu, gfn_t gfn, new = kzalloc(sizeof(struct gvt_dma), GFP_KERNEL); if (!new) - return; + return -ENOMEM; new->vgpu = vgpu; new->gfn = gfn; @@ -229,6 +229,7 @@ static void __gvt_cache_add(struct intel_vgpu *vgpu, gfn_t gfn, rb_insert_color(&new->dma_addr_node, &vgpu->vdev.dma_addr_cache); vgpu->vdev.nr_cache_entries++; + return 0; } static void __gvt_cache_remove_entry(struct intel_vgpu *vgpu, @@ -1586,11 +1587,12 @@ int kvmgt_dma_map_guest_page(unsigned long handle, unsigned long gfn, entry = __gvt_cache_find_gfn(info->vgpu, gfn); if (!entry) { ret = gvt_dma_map_page(vgpu, gfn, dma_addr); - if (ret) { - mutex_unlock(&info->vgpu->vdev.cache_lock); - return ret; - } - __gvt_cache_add(info->vgpu, gfn, *dma_addr); + if (ret) + goto err_unlock; + + ret = __gvt_cache_add(info->vgpu, gfn, *dma_addr); + if (ret) + goto err_unmap; } else { kref_get(&entry->ref); *dma_addr = entry->dma_addr; @@ -1598,6 +1600,12 @@ int kvmgt_dma_map_guest_page(unsigned long handle, unsigned long gfn, mutex_unlock(&info->vgpu->vdev.cache_lock); return 0; + +err_unmap: + gvt_dma_unmap_page(vgpu, gfn, *dma_addr); +err_unlock: + mutex_unlock(&info->vgpu->vdev.cache_lock); + return ret; } static void __gvt_dma_release(struct kref *ref) |