linux-kernel - Re: [PATCH] thinkpad_acpi: Fix inconsistent mute LED after resume

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Message-ID: <s5h7g8zfm0d.wl%tiwai@suse.de>
Date:	Thu, 13 Feb 2014 09:35:30 +0100
From:	Takashi Iwai <tiwai@...e.de>
To:	Matthew Garrett <matthew.garrett@...ula.com>
Cc:	rauchwolke@....net,
	"david.henningsson@...onical.com" <david.henningsson@...onical.com>,
	"ibm-acpi-devel@...ts.sourceforge.net" 
	<ibm-acpi-devel@...ts.sourceforge.net>,
	"platform-driver-x86@...r.kernel.org" 
	<platform-driver-x86@...r.kernel.org>,
	"ibm-acpi@....eng.br" <ibm-acpi@....eng.br>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] thinkpad_acpi: Fix inconsistent mute LED after resume

At Wed, 12 Feb 2014 20:37:36 +0000,
Matthew Garrett wrote:
> 
> On Wed, 2014-02-12 at 16:32 +0100, Takashi Iwai wrote:
> > The mute LED states have to be restored after resume.
> 
> Oh, never mind, we're not doing this through the LED class, are we?

Good point.  It seems that leds_class has pm_ops but it's enabled only
when a flag is set.

I added the original bug reporter to Cc.  (Don't know the name,
Bugzilla shows only the email address.)
Could you check the patch below works instead of the previous fix?


Takashi

---
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index defb6afc1409..16edf75d9c00 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -4796,6 +4796,7 @@ static struct tpacpi_led_classdev tpacpi_led_thinklight = {
 		.name		= "tpacpi::thinklight",
 		.brightness_set	= &light_sysfs_set,
 		.brightness_get	= &light_sysfs_get,
+		.flags		= LED_CORE_SUSPENDRESUME,
 	}
 };
 
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