linux-kernel - [PATCH 3.13 134/151] thinkpad_acpi: Fix inconsistent mute LED after resume

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Message-Id: <1399045139-4531-135-git-send-email-kamal@canonical.com>
Date:	Fri,  2 May 2014 08:38:42 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Takashi Iwai <tiwai@...e.de>,
	Matthew Garrett <matthew.garrett@...ula.com>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.13 134/151] thinkpad_acpi: Fix inconsistent mute LED after resume

3.13.11.1 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Takashi Iwai <tiwai@...e.de>

commit 119f449866ad18785b0445adaf0d2859c6dbdaa3 upstream.

The mute LED states have to be restored after resume.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=70351
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Matthew Garrett <matthew.garrett@...ula.com>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 drivers/platform/x86/thinkpad_acpi.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 58b0274..7b5e523 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -8453,9 +8453,21 @@ static void mute_led_exit(void)
 		tpacpi_led_set(i, false);
 }
 
+static void mute_led_resume(void)
+{
+	int i;
+
+	for (i = 0; i < TPACPI_LED_MAX; i++) {
+		struct tp_led_table *t = &led_tables[i];
+		if (t->state >= 0)
+			mute_led_on_off(t, t->state);
+	}
+}
+
 static struct ibm_struct mute_led_driver_data = {
 	.name = "mute_led",
 	.exit = mute_led_exit,
+	.resume = mute_led_resume,
 };
 
 /****************************************************************************
-- 
1.9.1

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