pwm: lpc32xx: Properly disable the clock on device removal

A single clock is used for all PWMs meaning the clock's reference count
might be between 0 and N when .remove() is called. Instead of a single
clk_disable() call pwm_disable() on each PWM, to ensure that
clk_disable() is called for each PWM that is still enabled.

Signed-off-by: Alban Bedel <alban.bedel@avionic-design.de>
Acked-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
Acked-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>

drivers/pwm/pwm-lpc32xx.c

@@ -136,8 +136,11 @@ static int lpc32xx_pwm_probe(struct platform_device *pdev)
 static int __devexit lpc32xx_pwm_remove(struct platform_device *pdev)
 {
 	struct lpc32xx_pwm_chip *lpc32xx = platform_get_drvdata(pdev);
+	unsigned int i;
+
+	for (i = 0; i < lpc32xx->chip.npwm; i++)
+		pwm_disable(&lpc32xx->chip.pwms[i]);
 
-	clk_disable(lpc32xx->clk);
 	return pwmchip_remove(&lpc32xx->chip);
 }