linux-kernel - [PATCH] mfd: Move error handling to the end of mc13xxx

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Date:	Mon, 03 Jan 2011 17:36:59 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>,
	Samuel Ortiz <sameo@...ux.intel.com>
Subject: [PATCH] mfd: Move error handling to the end of mc13xxx_probe

To improve readability, move error handling to the end of mc13xxx_probe.

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 drivers/mfd/mc13xxx-core.c |   22 ++++++++++------------
 1 files changed, 10 insertions(+), 12 deletions(-)

diff --git a/drivers/mfd/mc13xxx-core.c b/drivers/mfd/mc13xxx-core.c
index b9fcaf0..18c29fc 100644
--- a/drivers/mfd/mc13xxx-core.c
+++ b/drivers/mfd/mc13xxx-core.c
@@ -732,28 +732,21 @@ static int mc13xxx_probe(struct spi_device *spi)
 
 	ret = mc13xxx_identify(mc13xxx, &id);
 	if (ret || id == MC13XXX_ID_INVALID)
-		goto err_revision;
+		goto err;
 
 	/* mask all irqs */
 	ret = mc13xxx_reg_write(mc13xxx, MC13XXX_IRQMASK0, 0x00ffffff);
 	if (ret)
-		goto err_mask;
+		goto err;
 
 	ret = mc13xxx_reg_write(mc13xxx, MC13XXX_IRQMASK1, 0x00ffffff);
 	if (ret)
-		goto err_mask;
+		goto err;
 
 	ret = request_threaded_irq(spi->irq, NULL, mc13xxx_irq_thread,
 			IRQF_ONESHOT | IRQF_TRIGGER_HIGH, "mc13xxx", mc13xxx);
-
-	if (ret) {
-err_mask:
-err_revision:
-		mc13xxx_unlock(mc13xxx);
-		dev_set_drvdata(&spi->dev, NULL);
-		kfree(mc13xxx);
-		return ret;
-	}
+	if (ret)
+		goto err;
 
 	mc13xxx_unlock(mc13xxx);
 
@@ -785,6 +778,11 @@ err_revision:
 	}
 
 	return 0;
+err:
+	mc13xxx_unlock(mc13xxx);
+	dev_set_drvdata(&spi->dev, NULL);
+	kfree(mc13xxx);
+	return ret;
 }
 
 static int __devexit mc13xxx_remove(struct spi_device *spi)
-- 
1.7.2



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