powerpc/8xxx: Cleanup USB device-tree fixup

Some code cleanup done for USB device-tree fixup:
	- handling error value returned from fdt_fixup_usb_mode_phy_type()
	- using ARRAY_SIZE macro
	- using snprintf instead of sprintf

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

diff --git a/arch/powerpc/cpu/mpc8xxx/fdt.c b/arch/powerpc/cpu/mpc8xxx/fdt.c
index d07ae1b..bc1c30e 100644 (file)
--- a/arch/powerpc/cpu/mpc8xxx/fdt.c
+++ b/arch/powerpc/cpu/mpc8xxx/fdt.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2009-2011 Freescale Semiconductor, Inc.
+ * Copyright 2009-2012 Freescale Semiconductor, Inc.
  *
  * This file is derived from arch/powerpc/cpu/mpc85xx/cpu.c and
  * arch/powerpc/cpu/mpc86xx/cpu.c. Basically this file contains
@@ -137,28 +137,34 @@ void fdt_fixup_dr_usb(void *blob, bd_t *bd)
 
        for (i = 1; i <= FSL_MAX_NUM_USB_CTRLS; i++) {
                int mode_idx = -1, phy_idx = -1;
-               sprintf(str, "%s%d", "usb", i);
+               snprintf(str, 5, "%s%d", "usb", i);
                if (hwconfig(str)) {
-                       for (j = 0; j < sizeof(modes); j++) {
+                       for (j = 0; j < ARRAY_SIZE(modes); j++) {
                                if (hwconfig_subarg_cmp(str, "dr_mode",
                                                modes[j])) {
                                        mode_idx = j;
                                        break;
                                }
                        }
-                       for (j = 0; j < sizeof(phys); j++) {
+                       for (j = 0; j < ARRAY_SIZE(phys); j++) {
                                if (hwconfig_subarg_cmp(str, "phy_type",
                                                phys[j])) {
                                        phy_idx = j;
                                        break;
                                }
                        }
-                       if (mode_idx >= 0)
+                       if (mode_idx >= 0) {
                                usb_mode_off = fdt_fixup_usb_mode_phy_type(blob,
                                        modes[mode_idx], NULL, usb_mode_off);
-                       if (phy_idx >= 0)
+                               if (usb_mode_off < 0)
+                                       return;
+                       }
+                       if (phy_idx >= 0) {
                                usb_phy_off = fdt_fixup_usb_mode_phy_type(blob,
                                        NULL, phys[phy_idx], usb_phy_off);
+                               if (usb_phy_off < 0)
+                                       return;
+                       }
                        if (!strcmp(str, "usb1"))
                                usb1_defined = 1;
                        if (mode_idx < 0 && phy_idx < 0)