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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2008-02-20 20:51:45 +0000
committerGreg Kroah-Hartman <gregkh@suse.de>2008-04-24 21:16:39 -0700
commite298449401463dd18f24a87c48f9b0ec62bad936 (patch)
tree12f84e1370d9e81b15f742dfba1ee5b3b60ef108 /drivers/usb
parent9b0f2582d57d4c9081307c86e11afc9169de7d3e (diff)
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>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/serial/mos7840.c1
-rw-r--r--drivers/usb/serial/option.c1
2 files changed, 2 insertions, 0 deletions
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)