From: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Date: Thu, 2 Apr 2009 06:21:16 +0000 (+0200)
Subject: ALSA: snd-atmel-ac97c: cleanup registers when removing driver
X-Git-Tag: firefly_0821_release~14584^2~4^2~3
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=bd74a1843e06eef47bdb17452ed363255eb1d6e3;p=firefly-linux-kernel-4.4.55.git

ALSA: snd-atmel-ac97c: cleanup registers when removing driver

This patch will set the channel A and control channel mode register to
zero before disabling the AC97C peripheral.

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/sound/atmel/ac97c.c b/sound/atmel/ac97c.c
index 90527c14901e..4df9ca400545 100644
--- a/sound/atmel/ac97c.c
+++ b/sound/atmel/ac97c.c
@@ -969,6 +969,10 @@ static int __devexit atmel_ac97c_remove(struct platform_device *pdev)
 	if (gpio_is_valid(chip->reset_pin))
 		gpio_free(chip->reset_pin);
 
+	ac97c_writel(chip, CAMR, 0);
+	ac97c_writel(chip, COMR, 0);
+	ac97c_writel(chip, MR,   0);
+
 	clk_disable(chip->pclk);
 	clk_put(chip->pclk);
 	iounmap(chip->regs);