@@ -730,9 +730,6 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port)
* this function is called by the tty driver when it wants to know how many
* bytes of data we currently have outstanding in the port (data that has
* been written, but hasn't made it out the port yet)
- * If successful, we return the number of bytes left to be written in the
- * system,
- * Otherwise we return zero.
*****************************************************************************/
static unsigned int mos7840_chars_in_buffer(struct tty_struct *tty)
@@ -814,8 +811,6 @@ static void mos7840_break(struct tty_struct *tty, int break_state)
* mos7840_write_room
* this function is called by the tty driver when it wants to know how many
* bytes of data we can accept for a specific port.
- * If successful, we return the amount of room that we have for this port
- * Otherwise we return a negative error number.
*****************************************************************************/
static unsigned int mos7840_write_room(struct tty_struct *tty)
The driver write_room and chars_in_buffer callbacks used to incorrectly return a negative errno in case they were called with a NULL port driver-data pointer or if some other always-true sanity checks failed. The bogus sanity checks were later removed by commit ce039bd4b21f ("USB: serial: mos7840: drop paranoid port checks") and 7b2faede671a ("USB: serial: mos7840: drop port driver data accessors") but the function-header comments were never updated to match. Drop the outdated return-value comments. Signed-off-by: Johan Hovold <johan@kernel.org> --- drivers/usb/serial/mos7840.c | 5 ----- 1 file changed, 5 deletions(-)