diff options
| author | Johan Hovold <johan@kernel.org> | 2023-06-04 14:35:03 +0200 |
|---|---|---|
| committer | Johan Hovold <johan@kernel.org> | 2023-06-07 17:00:23 +0200 |
| commit | 6ff58ae17fd9523246a260434133ed9ab7f56df2 (patch) | |
| tree | 286bf3fdeec1bef50a64f4597deef90c55f1c82f /drivers/usb/serial/keyspan_pda.c | |
| parent | 9561de3a55bed6bdd44a12820ba81ec416e705a7 (diff) | |
USB: serial: return errors from break handling
Start propagating errors to user space when setting the break state
fails.
This will be used by follow-on changes to also report when a driver or
device does not support break control.
Tested-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Diffstat (limited to 'drivers/usb/serial/keyspan_pda.c')
| -rw-r--r-- | drivers/usb/serial/keyspan_pda.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c index 6fd15cd9e1eb..0eef358b314a 100644 --- a/drivers/usb/serial/keyspan_pda.c +++ b/drivers/usb/serial/keyspan_pda.c @@ -299,7 +299,7 @@ static speed_t keyspan_pda_setbaud(struct usb_serial *serial, speed_t baud) return baud; } -static void keyspan_pda_break_ctl(struct tty_struct *tty, int break_state) +static int keyspan_pda_break_ctl(struct tty_struct *tty, int break_state) { struct usb_serial_port *port = tty->driver_data; struct usb_serial *serial = port->serial; @@ -315,9 +315,13 @@ static void keyspan_pda_break_ctl(struct tty_struct *tty, int break_state) 4, /* set break */ USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT, value, 0, NULL, 0, 2000); - if (result < 0) + if (result < 0) { dev_dbg(&port->dev, "%s - error %d from usb_control_msg\n", __func__, result); + return result; + } + + return 0; } static void keyspan_pda_set_termios(struct tty_struct *tty, |