From ad21bb0b5abf5414e31ac3e41ff60216bee52982 Mon Sep 17 00:00:00 2001 From: Gurchetan Singh Date: Mon, 2 Dec 2019 17:36:25 -0800 Subject: [PATCH] udmabuf: add a pointer to the miscdevice in dma-buf private data Commit c1bbed668997268c9edccdc9db1bd1487d9e20b0 upstream. Will be used later. v2: rename 'udmabuf_misc' to 'device' (kraxel) Signed-off-by: Gurchetan Singh Link: http://patchwork.freedesktop.org/patch/msgid/20191203013627.85991-2-gurchetansingh@chromium.org Signed-off-by: Gerd Hoffmann --- drivers/dma-buf/udmabuf.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) --- a/drivers/dma-buf/udmabuf.c +++ b/drivers/dma-buf/udmabuf.c @@ -18,6 +18,7 @@ static const size_t size_limit_mb = 64; 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_ #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 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 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(st 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; }