diff options
| author |   Gurchetan Singh <gurchetansingh@chromium.org> | 2019-12-02 17:36:25 -0800 |
|---|---|---|
| committer |   Gerd Hoffmann <kraxel@redhat.com> | 2019-12-05 08:57:45 +0100 |
| commit | c1bbed668997268c9edccdc9db1bd1487d9e20b0 (patch) | |
| tree | b6d261050cd2e4f2f8ac4092e1d399671bf196e3 /drivers/dma-buf | |
| parent | udmabuf: use cache_sgt_mapping option (diff) | |
| download | linux-dev-c1bbed668997268c9edccdc9db1bd1487d9e20b0.tar.xz linux-dev-c1bbed668997268c9edccdc9db1bd1487d9e20b0.zip | |
udmabuf: add a pointer to the miscdevice in dma-buf private data
Will be used later.
v2: rename 'udmabuf_misc' to 'device' (kraxel)
Signed-off-by: Gurchetan Singh <gurchetansingh@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20191203013627.85991-2-gurchetansingh@chromium.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'drivers/dma-buf')
| -rw-r--r-- | drivers/dma-buf/udmabuf.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c index be15eb6b0586..f0bf3ba7441e 100644 --- a/drivers/dma-buf/udmabuf.c +++ b/drivers/dma-buf/udmabuf.c @@ -18,6 +18,7 @@ static const size_t size_limit_mb = 64; /* total dmabuf size, in megabytes */ struct udmabuf { pgoff_t pagecount; struct page **pages; + struct miscdevice *device; }; static vm_fault_t udmabuf_vm_fault(struct vm_fault *vmf) @@ -104,8 +105,9 @@ static const struct dma_buf_ops udmabuf_ops = { #define SEALS_WANTED (F_SEAL_SHRINK) #define SEALS_DENIED (F_SEAL_WRITE) -static long udmabuf_create(const struct udmabuf_create_list *head, - const struct udmabuf_create_item *list) +static long udmabuf_create(struct miscdevice *device, + struct udmabuf_create_list *head, + struct udmabuf_create_item *list) { DEFINE_DMA_BUF_EXPORT_INFO(exp_info); struct file *memfd = NULL; @@ -172,6 +174,7 @@ static long udmabuf_create(const struct udmabuf_create_list *head, exp_info.priv = ubuf; exp_info.flags = O_RDWR; + ubuf->device = device; buf = dma_buf_export(&exp_info); if (IS_ERR(buf)) { ret = PTR_ERR(buf); @@ -209,7 +212,7 @@ static long udmabuf_ioctl_create(struct file *filp, unsigned long arg) list.offset = create.offset; list.size = create.size; - return udmabuf_create(&head, &list); + return udmabuf_create(filp->private_data, &head, &list); } static long udmabuf_ioctl_create_list(struct file *filp, unsigned long arg) @@ -228,7 +231,7 @@ static long udmabuf_ioctl_create_list(struct file *filp, unsigned long arg) if (IS_ERR(list)) return PTR_ERR(list); - ret = udmabuf_create(&head, list); + ret = udmabuf_create(filp->private_data, &head, list); kfree(list); return ret; } |