提交 87521c46 编写于 作者: R Roel Kluin 提交者: Greg Kroah-Hartman

USB: mos7840: test and propagate set_uart_reg return value

The test for an mos7840_set_uart_reg() error return value only works when
status is signed. propagate its error value.
Signed-off-by: NRoel Kluin <12o3l@tiscali.nl>
Cc: SL Baur <steve@xemacs.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
上级 28ffd79c
......@@ -1713,7 +1713,7 @@ static int mos7840_tiocmset(struct usb_serial_port *port, struct file *file,
{
struct moschip_port *mos7840_port;
unsigned int mcr;
unsigned int status;
int status;
dbg("%s - port %d", __func__, port->number);
......@@ -1740,11 +1740,10 @@ static int mos7840_tiocmset(struct usb_serial_port *port, struct file *file,
mos7840_port->shadowMCR = mcr;
status = 0;
status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mcr);
if (status < 0) {
dbg("setting MODEM_CONTROL_REGISTER Failed\n");
return -1;
return status;
}
return 0;
......
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