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USB: cp210x: forward USB errors to USB serial core

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Make sure we forward all error codes (e.g. ENOMEM) to USB serial core.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Johan Hovold 2011-11-10 14:58:29 +01:00 committed by Greg Kroah-Hartman
parent 06946a6654
commit 2479e2a9c0
1 changed files with 13 additions and 6 deletions
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19
drivers/usb/serial/cp210x.c
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@ -280,7 +280,10 @@ static int cp210x_get_config(struct usb_serial_port *port, u8 request,
dbg("%s - Unable to send config request, "
"request=0x%x size=%d result=%d\n",
__func__, request, size, result);
return -EPROTO;
if (result > 0)
result = -EPROTO;
return result;
}
return 0;
@ -331,7 +334,10 @@ static int cp210x_set_config(struct usb_serial_port *port, u8 request,
dbg("%s - Unable to send request, "
"request=0x%x size=%d result=%d\n",
__func__, request, size, result);
return -EPROTO;
if (result > 0)
result = -EPROTO;
return result;
}
return 0;
@ -395,10 +401,11 @@ static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port)
dbg("%s - port %d", __func__, port->number);
if (cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_ENABLE)) {
dev_err(&port->dev, "%s - Unable to enable UART\n",
__func__);
return -EPROTO;
result = cp210x_set_config_single(port, CP210X_IFC_ENABLE,
UART_ENABLE);
if (result) {
dev_err(&port->dev, "%s - Unable to enable UART\n", __func__);
return result;
}
result = usb_serial_generic_open(tty, port);