diff options
Diffstat (limited to 'drivers/usb/serial/mos7840.c')
| -rw-r--r-- | drivers/usb/serial/mos7840.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index fda4a6421c4..96a8c771321 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -1343,6 +1343,7 @@ static void mos7840_break(struct tty_struct *tty, int break_state) else data = mos7840_port->shadowLCR & ~LCR_SET_BREAK; + /* FIXME: no locking on shadowLCR anywhere in driver */ mos7840_port->shadowLCR = data; dbg("mcs7840_break mos7840_port->shadowLCR is %x\n", mos7840_port->shadowLCR); @@ -2214,10 +2215,12 @@ static int mos7840_set_modem_info(struct moschip_port *mos7840_port, break; } + lock_kernel(); mos7840_port->shadowMCR = mcr; Data = mos7840_port->shadowMCR; status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); + unlock_kernel(); if (status < 0) { dbg("setting MODEM_CONTROL_REGISTER Failed\n"); return -1; |