From: Juha Yrjola <juha.yrjola@solidboot.com>
Date: Thu, 21 Sep 2006 15:29:26 +0000 (+0300)
Subject: ARM: OMAP: Add sanity check to clk_disable
X-Git-Tag: v2.6.18-omap1~55
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=ec07d4ec7ddbcfe32653d8e8b38ecea6c6570855;p=linux-2.6-omap-h63xx.git

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>
---

diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c
index 79a82f89c06..73a2aec0f88 100644
--- a/arch/arm/plat-omap/clock.c
+++ b/arch/arm/plat-omap/clock.c
@@ -101,6 +101,7 @@ 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);