From: Ralf Baechle Date: Mon, 9 Jan 2006 06:31:04 +0000 (-0800) Subject: [AX25] mkiss: Drop spinlock before sleeping call. X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c1854ebc7f13b23c3d6a6e641a1a1db1116ca998;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git [AX25] mkiss: Drop spinlock before sleeping call. With the previous missing-unlock fix the spinlock is dropped only after the tty->driver->write() call which might sleep. Signed-off-by: Ralf Baechle Signed-off-by: David S. Miller --- diff --git a/drivers/net/hamradio/mkiss.c b/drivers/net/hamradio/mkiss.c index 41b3d83c2ab8..f4424cf886c5 100644 --- a/drivers/net/hamradio/mkiss.c +++ b/drivers/net/hamradio/mkiss.c @@ -515,6 +515,7 @@ static void ax_encaps(struct net_device *dev, unsigned char *icp, int len) count = kiss_esc(p, (unsigned char *)ax->xbuff, len); } } + spin_unlock_bh(&ax->buflock); set_bit(TTY_DO_WRITE_WAKEUP, &ax->tty->flags); actual = ax->tty->driver->write(ax->tty, ax->xbuff, count); @@ -524,7 +525,6 @@ static void ax_encaps(struct net_device *dev, unsigned char *icp, int len) ax->dev->trans_start = jiffies; ax->xleft = count - actual; ax->xhead = ax->xbuff + actual; - spin_unlock_bh(&ax->buflock); } /* Encapsulate an AX.25 packet and kick it into a TTY queue. */