From: Juha Yrjola <juha.yrjola@solidboot.com>
Date: Mon, 25 Sep 2006 09:41:47 +0000 (+0300)
Subject: ARM: OMAP: Add sanity check to clk_disable
X-Git-Tag: v2.6.19-rc1~885^2~18^2~6
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dee45648a5e2f3075c51f5d6b5da65b32235d3f9;p=linux-2.6

ARM: OMAP: Add sanity check to clk_disable

BUG() if the clock use count is already zero.

Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---

diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c
index 7f45c7c3e6..4abf2714f2 100644
--- a/arch/arm/plat-omap/clock.c
+++ b/arch/arm/plat-omap/clock.c
@@ -100,6 +100,7 @@ void clk_disable(struct clk *clk)
 		return;
 
 	spin_lock_irqsave(&clockfw_lock, flags);
+	BUG_ON(clk->usecount == 0);
 	if (arch_clock->clk_disable)
 		arch_clock->clk_disable(clk);
 	spin_unlock_irqrestore(&clockfw_lock, flags);