68 lines
2.1 KiB
Diff
68 lines
2.1 KiB
Diff
From ad21bb0b5abf5414e31ac3e41ff60216bee52982 Mon Sep 17 00:00:00 2001
|
|
From: Gurchetan Singh <gurchetansingh@chromium.org>
|
|
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 <gurchetansingh@chromium.org>
|
|
Link: http://patchwork.freedesktop.org/patch/msgid/20191203013627.85991-2-gurchetansingh@chromium.org
|
|
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
|
|
---
|
|
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)
|
|
@@ -107,8 +108,9 @@ 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;
|
|
@@ -179,6 +181,7 @@ 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);
|
|
@@ -216,7 +219,7 @@ 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)
|
|
@@ -235,7 +238,7 @@ 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;
|
|
}
|