diff options
Diffstat (limited to 'drivers/media/video/videobuf-vmalloc.c')
| -rw-r--r-- | drivers/media/video/videobuf-vmalloc.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/drivers/media/video/videobuf-vmalloc.c b/drivers/media/video/videobuf-vmalloc.c index 73627d380f0..d68d0273807 100644 --- a/drivers/media/video/videobuf-vmalloc.c +++ b/drivers/media/video/videobuf-vmalloc.c @@ -72,6 +72,11 @@ static void videobuf_vm_close(struct vm_area_struct *vma) dprintk(1, "munmap %p q=%p\n", map, q); mutex_lock(&q->vb_lock); + + /* We need first to cancel streams, before unmapping */ + if (q->streaming) + videobuf_queue_cancel(q); + for (i = 0; i < VIDEO_MAX_FRAME; i++) { if (NULL == q->bufs[i]) continue; @@ -86,7 +91,15 @@ static void videobuf_vm_close(struct vm_area_struct *vma) In this case, memory should be freed, in order to do memory unmap. */ + MAGIC_CHECK(mem->magic, MAGIC_VMAL_MEM); + + /* vfree is not atomic - can't be + called with IRQ's disabled + */ + dprintk(1, "%s: buf[%d] freeing (%p)\n", + __func__, i, mem->vmalloc); + vfree(mem->vmalloc); mem->vmalloc = NULL; } @@ -94,9 +107,12 @@ static void videobuf_vm_close(struct vm_area_struct *vma) q->bufs[i]->map = NULL; q->bufs[i]->baddr = 0; } - mutex_unlock(&q->vb_lock); + kfree(map); + + mutex_unlock(&q->vb_lock); } + return; } @@ -138,6 +154,7 @@ static int __videobuf_iolock (struct videobuf_queue* q, struct v4l2_framebuffer *fbuf) { struct videobuf_vmalloc_memory *mem = vb->priv; + int pages; BUG_ON(!mem); @@ -154,8 +171,7 @@ static int __videobuf_iolock (struct videobuf_queue* q, } break; case V4L2_MEMORY_USERPTR: - { - int pages = PAGE_ALIGN(vb->size); + pages = PAGE_ALIGN(vb->size); dprintk(1, "%s memory method USERPTR\n", __func__); @@ -198,7 +214,6 @@ static int __videobuf_iolock (struct videobuf_queue* q, #endif break; - } case V4L2_MEMORY_OVERLAY: default: dprintk(1, "%s memory method OVERLAY/unknown\n", __func__); |