[patch 2/2] arm: Implement l2x0 cache disable function

---------- Forwarded message ----------
From: Thomas Gleixner <redacted>
Date: Thu, Jul 1, 2010 at 9:35 PM
Subject: [patch 2/2] arm: Implement l2x0 cache disable function
To: LAK <redacted>
Cc: Catalin Marinas <catalin.marinas@arm.com>


This function is called from kexec code before the inner caches are
disabled to prevent random crashes in the new kernel.

Signed-off-by: Thomas Gleixner <redacted>
Index: linux-2.6/arch/arm/mm/cache-l2x0.c
===================================================================

--- linux-2.6.orig/arch/arm/mm/cache-l2x0.c
+++ linux-2.6/arch/arm/mm/cache-l2x0.c

@@ -206,6 +206,12 @@ static void l2x0_flush_range(unsigned lo
       spin_unlock_irqrestore(&l2x0_lock, flags);
 }

+static void l2x0_cache_disable(void)
+{
+       l2x0_inv_all();
+       writel(0, l2x0_base + L2X0_CTRL);
+}