[U-Boot] [PATCH]powerpc/usb: Fix usb device-tree fix-up

[Ramneek Mehresh]

Fix USB device-tree fixup to properly handle device-tree fixup and
print appropriate message when wrong/junk "dr_mode" or "phy_type" 
are mentioned in hwconfig string

Signed-off-by: Ramneek Mehresh <ramneek.mehresh at freescale.com>
---

 arch/powerpc/cpu/mpc8xxx/fdt.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/powerpc/cpu/mpc8xxx/fdt.c b/arch/powerpc/cpu/mpc8xxx/fdt.c
index 2847094..413e184 100644
--- a/arch/powerpc/cpu/mpc8xxx/fdt.c
+++ b/arch/powerpc/cpu/mpc8xxx/fdt.c
@@ -167,6 +167,12 @@ void fdt_fixup_dr_usb(void *blob, bd_t *bd)
 				}
 			}
 
+			if (mode_idx < 0 || phy_idx < 0) {
+				printf("WARNING: wrong usb mode/phy"
+					" defined!!\n");
+				return;
+			}
+
 			dr_mode_type = modes[mode_idx];
 			dr_phy_type = phys[phy_idx];
 
-- 
1.7.11.4