HVSI hangup oops
PATCH RESEND 1/1 HVSI hangup oops
Hi Linus, I've tested this with the current BK tree as you requested.
Testing revealed that the HVSI driver could oops if carrier detect dropped mid-data transfer. Please apply this fix.
Signed-off-by Hollis Blanchard <[email protected]>
Signature · 23 lines
Hollis Blanchard
IBM Linux Technology Center
--- drivers/char/hvsi.c.orig 2004-10-11 11:36:36.000000000 -0500
+++ drivers/char/hvsi.c 2004-10-11 13:24:13.000000000 -0500
@@ -927,11 +927,17 @@ static void hvsi_close(struct tty_struct
static void hvsi_hangup(struct tty_struct *tty)
{
struct hvsi_struct *hp = tty->driver_data;
+ unsigned long flags;
pr_debug("%s\n", __FUNCTION__);
+ spin_lock_irqsave(&hp->lock, flags);
+
hp->count = 0;
+ hp->n_outbuf = 0;
hp->tty = NULL;
+
+ spin_unlock_irqrestore(&hp->lock, flags);
}
/* called with hp->lock held */