[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20241102050827.2451599-20-viro@zeniv.linux.org.uk>
Date: Sat, 2 Nov 2024 05:08:18 +0000
From: Al Viro <viro@...iv.linux.org.uk>
To: linux-fsdevel@...r.kernel.org
Cc: viro@...iv.linux.org.uk,
brauner@...nel.org,
cgroups@...r.kernel.org,
kvm@...r.kernel.org,
netdev@...r.kernel.org,
torvalds@...ux-foundation.org
Subject: [PATCH v3 20/28] convert media_request_get_by_fd()
the only thing done after fdput() (in failure cases) is a printk; safely
transposable with fdput()...
Reviewed-by: Christian Brauner <brauner@...nel.org>
Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
drivers/media/mc/mc-request.c | 18 ++++++------------
1 file changed, 6 insertions(+), 12 deletions(-)
diff --git a/drivers/media/mc/mc-request.c b/drivers/media/mc/mc-request.c
index e064914c476e..df39c8c11e9a 100644
--- a/drivers/media/mc/mc-request.c
+++ b/drivers/media/mc/mc-request.c
@@ -246,22 +246,21 @@ static const struct file_operations request_fops = {
struct media_request *
media_request_get_by_fd(struct media_device *mdev, int request_fd)
{
- struct fd f;
struct media_request *req;
if (!mdev || !mdev->ops ||
!mdev->ops->req_validate || !mdev->ops->req_queue)
return ERR_PTR(-EBADR);
- f = fdget(request_fd);
- if (!fd_file(f))
- goto err_no_req_fd;
+ CLASS(fd, f)(request_fd);
+ if (fd_empty(f))
+ goto err;
if (fd_file(f)->f_op != &request_fops)
- goto err_fput;
+ goto err;
req = fd_file(f)->private_data;
if (req->mdev != mdev)
- goto err_fput;
+ goto err;
/*
* Note: as long as someone has an open filehandle of the request,
@@ -272,14 +271,9 @@ media_request_get_by_fd(struct media_device *mdev, int request_fd)
* before media_request_get() is called.
*/
media_request_get(req);
- fdput(f);
-
return req;
-err_fput:
- fdput(f);
-
-err_no_req_fd:
+err:
dev_dbg(mdev->dev, "cannot find request_fd %d\n", request_fd);
return ERR_PTR(-EINVAL);
}
--
2.39.5
Powered by blists - more mailing lists