imx: WARN in clk_disable if the clock isn't enabled

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Russell King <linux@arm.linux.org.uk>

diff --git a/arch/arm/plat-mxc/clock.c b/arch/arm/plat-mxc/clock.c
index 9e8fbd5..323ff8c 100644 (file)
--- a/arch/arm/plat-mxc/clock.c
+++ b/arch/arm/plat-mxc/clock.c
@@ -56,6 +56,7 @@ static void __clk_disable(struct clk *clk)
        __clk_disable(clk->parent);
        __clk_disable(clk->secondary);
 
+       WARN_ON(!clk->usecount);
        if (!(--clk->usecount) && clk->disable)
                clk->disable(clk);
 }