ircomm_tty_block_til_ready would hold tty lock while blocking. Since the sleep
might take a long time we can prevent other processes from accessing the tty,
causing hung tasks and a dead tty.
Diagnosed-by: Peter Hurley <pe...@hurleysoftware.com>
Signed-off-by: Sasha Levin <sasha.le...@oracle.com>
---
net/irda/ircomm/ircomm_tty.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c
index 9a5fd3c..7844cb3 100644
--- a/net/irda/ircomm/ircomm_tty.c
+++ b/net/irda/ircomm/ircomm_tty.c
@@ -355,7 +355,9 @@ static int ircomm_tty_block_til_ready(struct ircomm_tty_cb
*self,
IRDA_DEBUG(1, "%s(%d):block_til_ready blocking on %s
open_count=%d\n",
__FILE__, __LINE__, tty->driver->name, port->count);
+ tty_unlock(tty);
schedule();
+ tty_lock(tty);
}
__set_current_state(TASK_RUNNING);
--
1.8.1.4
--
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