[PATCH 05/25] OMAP4: Use WARN_ON() instead of BUG_ON() with graceful exit

OMAP4 L2X0 initialisation code uses BUG_ON() for the ioremap()
failure scenarios.

Use WARN_ON() instead and allow graceful function exits.

This was suggsted by Kevin Hilman [off-list ref] during
OMAP4 PM code review.

Signed-off-by: Santosh Shilimkar <redacted>
Cc: Kevin Hilman <redacted>
---
 arch/arm/mach-omap2/omap4-common.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/arch/arm/mach-omap2/omap4-common.c b/arch/arm/mach-omap2/omap4-common.c
index 4791370..4904025 100644
--- a/arch/arm/mach-omap2/omap4-common.c
+++ b/arch/arm/mach-omap2/omap4-common.c

@@ -121,7 +121,8 @@ static int __init omap_l2_cache_init(void)
 
 	/* Static mapping, never released */
 	l2cache_base = ioremap(OMAP44XX_L2CACHE_BASE, SZ_4K);
-	BUG_ON(!l2cache_base);
+	if (WARN_ON(!l2cache_base))
+		return -ENODEV;
 
 	/*
 	 * 16-way associativity, parity disabled

-- 
1.7.4.1