linux-kernel - [PATCH 424/437] media: usb: uvc: convert to read/write iterators

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Message-ID: <20240411153126.16201-425-axboe@kernel.dk>
Date: Thu, 11 Apr 2024 09:19:24 -0600
From: Jens Axboe <axboe@...nel.dk>
To: linux-kernel@...r.kernel.org
Cc: Jens Axboe <axboe@...nel.dk>
Subject: [PATCH 424/437] media: usb: uvc: convert to read/write iterators

Signed-off-by: Jens Axboe <axboe@...nel.dk>
---
 drivers/media/usb/uvc/uvc_debugfs.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/media/usb/uvc/uvc_debugfs.c b/drivers/media/usb/uvc/uvc_debugfs.c
index 1a1258d4ffca..2c4935a0257e 100644
--- a/drivers/media/usb/uvc/uvc_debugfs.c
+++ b/drivers/media/usb/uvc/uvc_debugfs.c
@@ -39,13 +39,11 @@ static int uvc_debugfs_stats_open(struct inode *inode, struct file *file)
 	return 0;
 }
 
-static ssize_t uvc_debugfs_stats_read(struct file *file, char __user *user_buf,
-				      size_t nbytes, loff_t *ppos)
+static ssize_t uvc_debugfs_stats_read(struct kiocb *iocb, struct iov_iter *to)
 {
-	struct uvc_debugfs_buffer *buf = file->private_data;
+	struct uvc_debugfs_buffer *buf = iocb->ki_filp->private_data;
 
-	return simple_read_from_buffer(user_buf, nbytes, ppos, buf->data,
-				       buf->count);
+	return simple_copy_to_iter(buf->data, &iocb->ki_pos, buf->count, to);
 }
 
 static int uvc_debugfs_stats_release(struct inode *inode, struct file *file)
@@ -60,7 +58,7 @@ static const struct file_operations uvc_debugfs_stats_fops = {
 	.owner = THIS_MODULE,
 	.open = uvc_debugfs_stats_open,
 	.llseek = no_llseek,
-	.read = uvc_debugfs_stats_read,
+	.read_iter = uvc_debugfs_stats_read,
 	.release = uvc_debugfs_stats_release,
 };
 
-- 
2.43.0