From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lars-Peter Clausen Subject: [PATCH] tty: nwpserial: Pass correct pointer to free_irq() Date: Mon, 20 May 2013 19:07:30 +0200 Message-ID: <1369069650-1742-1-git-send-email-lars@metafoo.de> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: Greg Kroah-Hartman , Jiri Slaby Cc: Benjamin Krill , linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, Lars-Peter Clausen List-Id: linux-serial@vger.kernel.org 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: @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(...) Signed-off-by: Lars-Peter Clausen --- 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