From: Alan Cox Date: Wed, 20 Feb 2008 20:51:45 +0000 (+0000) Subject: USB: serial: Note mos7480 and option don't lock modem status X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e298449401463dd18f24a87c48f9b0ec62bad936;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git USB: serial: Note mos7480 and option don't lock modem status Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index aeeb9cb20999..0b29c5383dc8 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -1722,6 +1722,7 @@ static int mos7840_tiocmset(struct usb_serial_port *port, struct file *file, if (mos7840_port == NULL) return -ENODEV; + /* FIXME: What locks the port registers ? */ mcr = mos7840_port->shadowMCR; if (clear & TIOCM_RTS) mcr &= ~MCR_RTS; diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index d101025a4c63..0e7eeb2820e2 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -458,6 +458,7 @@ static int option_tiocmset(struct usb_serial_port *port, struct file *file, portdata = usb_get_serial_port_data(port); + /* FIXME: what locks portdata fields ? */ if (set & TIOCM_RTS) portdata->rts_state = 1; if (set & TIOCM_DTR)