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| author | Dmitry Osipenko <dmitry.osipenko@collabora.com> | 2022-11-10 23:13:44 +0300 |
|---|---|---|
| committer | Dmitry Osipenko <dmitry.osipenko@collabora.com> | 2022-11-11 23:49:38 +0300 |
| commit | 8526e973647e1bf77dadf894a36aefd4fd1b8a3f (patch) | |
| tree | 3f5e91fd4de88eb58e6a8ccd3aff3340c624b4fb /drivers/dma-buf | |
| parent | 9df38728f78c544a8edab8acf2e4d3eee73dfaeb (diff) | |
| download | linux-8526e973647e1bf77dadf894a36aefd4fd1b8a3f.tar.bz2 | |
dma-buf: Move dma_buf_mmap_internal() to dynamic locking specification
All dma-buf functions has been moved to dynamic locking specification
The dma_buf_mmap_internal() was missed out by accident. Take reservation
lock around file mapping operation to adhere the common locking convention.
Reported-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221110201349.351294-2-dmitry.osipenko@collabora.com
Diffstat (limited to 'drivers/dma-buf')
| -rw-r--r-- | drivers/dma-buf/dma-buf.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c index 13bfd2d09c56..b809513b03fe 100644 --- a/drivers/dma-buf/dma-buf.c +++ b/drivers/dma-buf/dma-buf.c @@ -129,6 +129,7 @@ static struct file_system_type dma_buf_fs_type = { static int dma_buf_mmap_internal(struct file *file, struct vm_area_struct *vma) { struct dma_buf *dmabuf; + int ret; if (!is_dma_buf_file(file)) return -EINVAL; @@ -144,7 +145,11 @@ static int dma_buf_mmap_internal(struct file *file, struct vm_area_struct *vma) dmabuf->size >> PAGE_SHIFT) return -EINVAL; - return dmabuf->ops->mmap(dmabuf, vma); + dma_resv_lock(dmabuf->resv, NULL); + ret = dmabuf->ops->mmap(dmabuf, vma); + dma_resv_unlock(dmabuf->resv); + + return ret; } static loff_t dma_buf_llseek(struct file *file, loff_t offset, int whence) |