From: LABBE Corentin Date: Tue, 24 Nov 2015 14:36:57 +0000 (+0100) Subject: serial: imx: fix a possible NULL dereference X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=5f8b90431fc9613d4559a602a1070b2270ff4444;p=deliverable%2Flinux.git serial: imx: fix a possible NULL dereference of_match_device could return NULL, and so cause a NULL pointer dereference later. Even if the probability of this case is very low, fixing it made static analyzers happy. Solving this with of_device_get_match_data made also code simplier. Signed-off-by: LABBE Corentin Acked-by: Uwe Kleine-König Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 016e4be05cec..76818f53f0ae 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -1857,11 +1857,10 @@ static int serial_imx_probe_dt(struct imx_port *sport, struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; - const struct of_device_id *of_id = - of_match_device(imx_uart_dt_ids, &pdev->dev); int ret; - if (!np) + sport->devdata = of_device_get_match_data(&pdev->dev); + if (!sport->devdata) /* no device tree device */ return 1; @@ -1878,8 +1877,6 @@ static int serial_imx_probe_dt(struct imx_port *sport, if (of_get_property(np, "fsl,dte-mode", NULL)) sport->dte_mode = 1; - sport->devdata = of_id->data; - return 0; } #else