Re: [PATCH] mfd: Move error handling to the end of mc13xxx_probe

Previous thread: [PATCH] fix i810 i2c bug by Stefani Seibold on Monday, January 3, 2011 - 2:28 am. (1 message)

Next thread: [GIT] dmaengine fixes for 2.6.37-rc8 by Dan Williams on Monday, January 3, 2011 - 3:28 am. (1 message)
From: Axel Lin
Date: Monday, January 3, 2011 - 2:36 am

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

Signed-off-by: Axel Lin <axel.lin@gmail.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



--

From: Uwe Kleine-König
Date: Monday, January 3, 2011 - 1:05 pm

I like the way it was done before (obviously as I wrote the code).
Though I don't feel strongly against the move.  Still I prefer the more
explicit error labels.

On a scale between -1 and 1 it would get a -0 from me.

Best regards

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
--

Previous thread: [PATCH] fix i810 i2c bug by Stefani Seibold on Monday, January 3, 2011 - 2:28 am. (1 message)

Next thread: [GIT] dmaengine fixes for 2.6.37-rc8 by Dan Williams on Monday, January 3, 2011 - 3:28 am. (1 message)