linux-kernel - [PATCH] backlight: adp8860/adp8870: Fix resume

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Message-Id: <1361278925-11107-1-git-send-email-lars@metafoo.de>
Date:	Tue, 19 Feb 2013 14:02:05 +0100
From:	Lars-Peter Clausen <lars@...afoo.de>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Richard Purdie <rpurdie@...ys.net>,
	Michael Hennerich <michael.hennerich@...log.com>,
	device-drivers-devel@...ckfin.uclinux.org,
	linux-kernel@...r.kernel.org, Lars-Peter Clausen <lars@...afoo.de>
Subject: [PATCH] backlight: adp8860/adp8870: Fix resume

Clearing the NSTBY bit in the control register also automatically clears the
BLEN bit. So we need to make sure to set it again during resume, otherwise the
backlight will stay off.

Cc: stable@...r.kernel.org
Signed-off-by: Lars-Peter Clausen <lars@...afoo.de>
---
 drivers/video/backlight/adp8860_bl.c | 2 +-
 drivers/video/backlight/adp8870_bl.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/video/backlight/adp8860_bl.c b/drivers/video/backlight/adp8860_bl.c
index 6bb72c0..a77c9ca 100644
--- a/drivers/video/backlight/adp8860_bl.c
+++ b/drivers/video/backlight/adp8860_bl.c
@@ -783,7 +783,7 @@ static int adp8860_i2c_suspend(struct i2c_client *client, pm_message_t message)
 
 static int adp8860_i2c_resume(struct i2c_client *client)
 {
-	adp8860_set_bits(client, ADP8860_MDCR, NSTBY);
+	adp8860_set_bits(client, ADP8860_MDCR, NSTBY | BLEN);
 
 	return 0;
 }
diff --git a/drivers/video/backlight/adp8870_bl.c b/drivers/video/backlight/adp8870_bl.c
index 63c882b..712c25a 100644
--- a/drivers/video/backlight/adp8870_bl.c
+++ b/drivers/video/backlight/adp8870_bl.c
@@ -957,7 +957,7 @@ static int adp8870_i2c_suspend(struct i2c_client *client, pm_message_t message)
 
 static int adp8870_i2c_resume(struct i2c_client *client)
 {
-	adp8870_set_bits(client, ADP8870_MDCR, NSTBY);
+	adp8870_set_bits(client, ADP8870_MDCR, NSTBY | BLEN);
 
 	return 0;
 }
-- 
1.8.0

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