ARM: mx5: check for error in ioremap

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/arm/plat-mxc/ehci.c b/arch/arm/plat-mxc/ehci.c
index c1a7146dad96..d59f5feb3c54 100644
--- a/arch/arm/plat-mxc/ehci.c
+++ b/arch/arm/plat-mxc/ehci.c
@@ -254,6 +254,10 @@ int mxc_initialize_usb_hw(int port, unsigned int flags)
                 int ret = 0;
 
                 usb_base = ioremap(MX51_OTG_BASE_ADDR, SZ_4K);
+                if (!usb_base) {
+                        printk(KERN_ERR "%s(): ioremap failed\n", __func__);
+                        return -ENOMEM;
+                }
 
                 switch (port) {
                 case 0: /* OTG port */