From: Lars-Peter Clausen <lars@metafoo.de>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jslaby@suse.cz>
Cc: Benjamin Krill <ben@codiert.org>,
linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
Lars-Peter Clausen <lars@metafoo.de>
Subject: [PATCH] tty: nwpserial: Pass correct pointer to free_irq()
Date: Mon, 20 May 2013 19:07:30 +0200 [thread overview]
Message-ID: <1369069650-1742-1-git-send-email-lars@metafoo.de> (raw)
free_irq() expects the same pointer that was passed to request_irq(), otherwise
the IRQ is not freed.
The issue was found using the following coccinelle script:
<smpl>
@r1@
type T;
T devid;
@@
request_irq(..., devid)
@r2@
type r1.T;
T devid;
position p;
@@
free_irq@p(..., devid)
@@
position p != r2.p;
@@
*free_irq@p(...)
</smpl>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
---
drivers/tty/serial/nwpserial.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/nwpserial.c b/drivers/tty/serial/nwpserial.c
index 77287c5..549c70a 100644
--- a/drivers/tty/serial/nwpserial.c
+++ b/drivers/tty/serial/nwpserial.c
@@ -199,7 +199,7 @@ static void nwpserial_shutdown(struct uart_port *port)
dcr_write(up->dcr_host, UART_IER, up->ier);
/* free irq */
- free_irq(up->port.irq, port);
+ free_irq(up->port.irq, up);
}
static int nwpserial_verify_port(struct uart_port *port,
--
1.8.0
next reply other threads:[~2013-05-20 17:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-20 17:07 Lars-Peter Clausen [this message]
2013-05-21 7:18 ` [PATCH] tty: nwpserial: Pass correct pointer to free_irq() Benjamin Krill
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