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USB: serial: Note mos7480 and option don't lock modem status 

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Cox 2008-02-20 20:51:45 +00:00 committed by Greg Kroah-Hartman
parent 9b0f2582d5
commit e298449401
2 changed files with 2 additions and 0 deletions
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1
drivers/usb/serial/mos7840.c
View File

@ -1722,6 +1722,7 @@ static int mos7840_tiocmset(struct usb_serial_port *port, struct file *file,
if (mos7840_port == NULL) if (mos7840_port == NULL)
return -ENODEV; return -ENODEV;
/* FIXME: What locks the port registers ? */
mcr = mos7840_port->shadowMCR; mcr = mos7840_port->shadowMCR;
if (clear & TIOCM_RTS) if (clear & TIOCM_RTS)
mcr &= ~MCR_RTS; mcr &= ~MCR_RTS;

1
drivers/usb/serial/option.c
View File

@ -458,6 +458,7 @@ static int option_tiocmset(struct usb_serial_port *port, struct file *file,
portdata = usb_get_serial_port_data(port); portdata = usb_get_serial_port_data(port);
/* FIXME: what locks portdata fields ? */
if (set & TIOCM_RTS) if (set & TIOCM_RTS)
portdata->rts_state = 1; portdata->rts_state = 1;
if (set & TIOCM_DTR) if (set & TIOCM_DTR)