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From:   Brian Masney <masneyb@onstation.org>
To:     lee.jones@linaro.org, daniel.thompson@linaro.org,
        jingoohan1@gmail.com, robh+dt@kernel.org
Cc:     jacek.anaszewski@gmail.com, pavel@ucw.cz, mark.rutland@arm.com,
        b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org,
        linux-leds@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-fbdev@vger.kernel.org,
        dmurphy@ti.com, jonathan@marek.ca
Subject: [PATCH v4 1/3] backlight: lm3630a: return 0 on success in update_status functions
Date:   Tue, 16 Apr 2019 19:53:48 -0400
Message-Id: <20190416235350.13742-2-masneyb@onstation.org>
In-Reply-To: <20190416235350.13742-1-masneyb@onstation.org>
References: <20190416235350.13742-1-masneyb@onstation.org>
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Sender: linux-kernel-owner@vger.kernel.org
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lm3630a_bank_a_update_status() and lm3630a_bank_b_update_status()
both return the brightness value if the brightness was successfully
updated. Writing to these attributes via sysfs would cause a 'Bad
address' error to be returned. These functions should return 0 on
success, so let's change it to correct that error.

Signed-off-by: Brian Masney <masneyb@onstation.org>
Fixes: 28e64a68a2ef ("backlight: lm3630: apply chip revision")
Acked-by: Pavel Machek <pavel@ucw.cz>
---
Changes since v3:
- None

Changes since v2:
- None

 drivers/video/backlight/lm3630a_bl.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/video/backlight/lm3630a_bl.c b/drivers/video/backlight/lm3630a_bl.c
index 2030a6b77a09..ef2553f452ca 100644
--- a/drivers/video/backlight/lm3630a_bl.c
+++ b/drivers/video/backlight/lm3630a_bl.c
@@ -201,7 +201,7 @@ static int lm3630a_bank_a_update_status(struct backlight_device *bl)
 				      LM3630A_LEDA_ENABLE, LM3630A_LEDA_ENABLE);
 	if (ret < 0)
 		goto out_i2c_err;
-	return bl->props.brightness;
+	return 0;
 
 out_i2c_err:
 	dev_err(pchip->dev, "i2c failed to access\n");
@@ -278,7 +278,7 @@ static int lm3630a_bank_b_update_status(struct backlight_device *bl)
 				      LM3630A_LEDB_ENABLE, LM3630A_LEDB_ENABLE);
 	if (ret < 0)
 		goto out_i2c_err;
-	return bl->props.brightness;
+	return 0;
 
 out_i2c_err:
 	dev_err(pchip->dev, "i2c failed to access REG_CTRL\n");
-- 
2.20.1