From 51ef74f6400c731827454d010b35b122103fe9f9 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Mon, 19 Aug 2013 18:00:08 +0200 Subject: [PATCH] usb: musb: dsps: fix devm_ioremap_resource error detection code devm_ioremap_resource returns an ERR_PTR value, not NULL, on failure. Furthermore, the value returned by devm_ioremap_resource should be tested. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // @@ expression e,e1; statement S; @@ *e = devm_ioremap_resource(...); if (!e1) S // Signed-off-by: Julia Lawall Signed-off-by: Felipe Balbi --- drivers/usb/musb/musb_dsps.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index 4ffbaace7913..4ad52e76c4dd 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -361,8 +361,8 @@ static int dsps_musb_init(struct musb *musb) return -EINVAL; reg_base = devm_ioremap_resource(dev, r); - if (!musb->ctrl_base) - return -EINVAL; + if (IS_ERR(reg_base)) + return PTR_ERR(reg_base); musb->ctrl_base = reg_base; /* NOP driver needs change if supporting dual instance */ -- 2.39.5