diff options
| author | Johan Hovold <jhovold@gmail.com> | 2011-11-10 17:38:13 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-11-15 10:47:41 -0800 |
| commit | 3827d8762febd68ff1b6db0bb5efa55bfbccaeb4 (patch) | |
| tree | 1103c4e441d74776e0949399d01e11746aa58a88 /drivers/usb/serial | |
| parent | 2c4d6bf295ae10ffcd84f0df6cb642598eb66603 (diff) | |
| download | linux-3827d8762febd68ff1b6db0bb5efa55bfbccaeb4.tar.bz2 | |
USB: serial: do not forward USB specific errors in open
Use usb_translate_errors() to map USB-specific errors to errors
appropriate for user space (ENOMEM, ENODEV and EIO) in open.
Currently almost all serial drivers simply forward error codes from the
stack (e.g. from usb_submit_urb()), but these codes often have
different meanings in user-space. Doing the mapping in usb-serial core
simplifies driver code and allows for more consistent error reporting.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/serial')
| -rw-r--r-- | drivers/usb/serial/usb-serial.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 8d5190f3d8eb..a2a0574b662a 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -260,6 +260,10 @@ static int serial_activate(struct tty_port *tport, struct tty_struct *tty) else retval = port->serial->type->open(tty, port); mutex_unlock(&serial->disc_mutex); + + if (retval < 0) + retval = usb_translate_errors(retval); + return retval; } |