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>

1 files changed, 4 insertions, 0 deletions

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);