mxser: spin_lock() => spin_lock_irq()

This should be spin_lock_irq() to match the spin_unlock_irq().  Originally
it was a lock_kernel() but we switched everything to spin_lock_irq() last
November.

[akpm@linux-foundation.org: fix the MOXA_ASPP_MON case too (per Jiri)]
Signed-off-by: Dan Carpenter <error27@gmail.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index 95c9f54..4702305 100644 (file)
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -1768,7 +1768,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file,
                int len, lsr;
 
                len = mxser_chars_in_buffer(tty);
-               spin_lock(&info->slock);
+               spin_lock_irq(&info->slock);
                lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_THRE;
                spin_unlock_irq(&info->slock);
                len += (lsr ? 0 : 1);
@@ -1778,12 +1778,12 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file,
        case MOXA_ASPP_MON: {
                int mcr, status;
 
-               spin_lock(&info->slock);
+               spin_lock_irq(&info->slock);
                status = mxser_get_msr(info->ioaddr, 1, tty->index);
                mxser_check_modem_status(tty, info, status);
 
                mcr = inb(info->ioaddr + UART_MCR);
-               spin_unlock(&info->slock);
+               spin_unlock_irq(&info->slock);
 
                if (mcr & MOXA_MUST_MCR_XON_FLAG)
                        info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFHOLD;