[PATCH] ac97_bus power management

[PATCH] ac97_bus power management

[Martin Langer]

Any reason why ac97_bus.c comes without CONFIG_PM?
This patch adds CONFIG_PM to the ac97_bus driver.

Signed-off-by: Martin Langer <martin-langer@gmx.de>

--- ../alsa-driver-1.0.14rc2-original/alsa-kernel/ac97_bus.c	2007-01-15 14:25:18.000000000 +0100
+++ alsa-kernel/ac97_bus.c	2007-02-02 21:39:47.000000000 +0100
@@ -26,6 +26,7 @@
 	return 1;
 }
 
+#ifdef CONFIG_PM
 static int ac97_bus_suspend(struct device *dev, pm_message_t state)
 {
 	int ret = 0;
@@ -45,12 +46,15 @@
 
 	return ret;
 }
+#endif /* CONFIG_PM */
 
 struct bus_type ac97_bus_type = {
 	.name		= "ac97",
 	.match		= ac97_bus_match,
+#ifdef CONFIG_PM
 	.suspend	= ac97_bus_suspend,
 	.resume		= ac97_bus_resume,
+#endif /* CONFIG_PM */
 };
 
 static int __init ac97_bus_init(void)

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Re: [PATCH] ac97_bus power management

[Takashi Iwai]

At Fri, 2 Feb 2007 22:44:37 +0100,
Martin Langer wrote:
> 
> Any reason why ac97_bus.c comes without CONFIG_PM?

Because it works as is?  But better to cut out such an unneeded code.

> This patch adds CONFIG_PM to the ac97_bus driver.
> 
> Signed-off-by: Martin Langer <martin-langer@gmx.de>

Thanks.  Applied to ALSA tree now.


Takashi

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