[PATCH 3.14 74/83] thinkpad_acpi: Fix inconsistent mute LED after resume

[Greg Kroah-Hartman]

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

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

From: Takashi Iwai <tiwai@xxxxxxx>

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@xxxxxxx>
Signed-off-by: Matthew Garrett <matthew.garrett@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/platform/x86/thinkpad_acpi.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)

--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -8447,9 +8447,21 @@ 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,
 };
 
 /****************************************************************************


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