@@ -911,10 +911,8 @@ static int iterate_tty_read(struct tty_ldisc *ld, struct tty_struct *tty,
/**
* tty_read - read method for tty device files
- * @file: pointer to tty file
- * @buf: user buffer
- * @count: size of user buffer
- * @ppos: unused
+ * @iocb: kernel I/O control block
+ * @to: destination for the data read
*
* Perform the read system call function on this terminal device. Checks
* for hung up devices before calling the line discipline method.
@@ -1092,23 +1090,6 @@ void tty_write_message(struct tty_struct *tty, char *msg)
}
}
-
-/**
- * tty_write - write method for tty device file
- * @file: tty file pointer
- * @buf: user data to write
- * @count: bytes to write
- * @ppos: unused
- *
- * Write data to a tty device via the line discipline.
- *
- * Locking:
- * Locks the line discipline as required
- * Writes to the tty driver are serialized by the atomic_write_lock
- * and are then processed in chunks to the device. The line discipline
- * write method will not be invoked in parallel for each device.
- */
-
static ssize_t file_tty_write(struct file *file, struct kiocb *iocb, struct iov_iter *from)
{
struct tty_struct *tty = file_tty(file);
@@ -1133,6 +1114,20 @@ static ssize_t file_tty_write(struct file *file, struct kiocb *iocb, struct iov_
return ret;
}
+/**
+ * tty_write - write method for tty device file
+ * @iocb: kernel I/O control block
+ * @from: iov_iter with data to write
+ *
+ * Write data to a tty device via the line discipline.
+ *
+ * Locking:
+ * Locks the line discipline as required
+ * Writes to the tty driver are serialized by the atomic_write_lock
+ * and are then processed in chunks to the device. The line
+ * discipline write method will not be invoked in parallel for
+ * each device.
+ */
static ssize_t tty_write(struct kiocb *iocb, struct iov_iter *from)
{
return file_tty_write(iocb->ki_filp, iocb, from);
After commits a9cbbb80e3e7 (tty: avoid using vfs_iocb_iter_write() for redirected console writes) and dd78b0c483e3 (tty: implement read_iter), the tty_read and tty_write kernel-doc comments don't match the code: tty_io.c:931: warning: Function parameter or member 'iocb' not described in 'tty_read' tty_io.c:931: warning: Function parameter or member 'to' not described in 'tty_read' tty_io.c:931: warning: Excess function parameter 'file' description in 'tty_read' tty_io.c:931: warning: Excess function parameter 'buf' description in 'tty_read' tty_io.c:931: warning: Excess function parameter 'count' description in 'tty_read' tty_io.c:931: warning: Excess function parameter 'ppos' description in 'tty_read' tty_io.c:1115: warning: Function parameter or member 'iocb' not described in 'file_tty_write' tty_io.c:1115: warning: Function parameter or member 'from' not described in 'file_tty_write' tty_io.c:1115: warning: expecting prototype for tty_write(). Prototype was for file_tty_write() instead Fix them to correspond the reality, i.e. the switch from read/write to read_iter/write_iter. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Linus Torvalds <torvalds@linux-foundation.org> --- drivers/tty/tty_io.c | 37 ++++++++++++++++--------------------- 1 file changed, 16 insertions(+), 21 deletions(-)