[PATCH] spi: imx: Check for allocation failure earlier

[PATCH] spi: imx: Check for allocation failure earlier

[Fabio Estevam]

In case of spi_alloc_master() failure it is better to return the
error immediately, so move the error check right after the allocation.

Signed-off-by: Fabio Estevam <fabio.estevam-3arQi8VN3Tc@public.gmane.org>
---
 drivers/spi/spi-imx.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index e544f45..f9698b7 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -1169,15 +1169,15 @@ static int spi_imx_probe(struct platform_device *pdev)
 	}
 
 	master = spi_alloc_master(&pdev->dev, sizeof(struct spi_imx_data));
+	if (!master)
+		return -ENOMEM;
+
 	ret = of_property_read_u32(np, "fsl,spi-rdy-drctl", &spi_drctl);
 	if ((ret < 0) || (spi_drctl >= 0x3)) {
 		/* '11' is reserved */
 		spi_drctl = 0;
 	}
 
-	if (!master)
-		return -ENOMEM;
-
 	platform_set_drvdata(pdev, master);
 
 	master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32);
-- 
2.7.4

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Applied "spi: imx: Check for allocation failure earlier" to the spi tree

[Mark Brown]

The patch

   spi: imx: Check for allocation failure earlier

has been applied to the spi tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 2c147776dc8b3d67ec42605dcba4deb98f2d0536 Mon Sep 17 00:00:00 2001
From: Fabio Estevam <fabio.estevam-3arQi8VN3Tc@public.gmane.org>
Date: Tue, 20 Jun 2017 13:50:55 -0300
Subject: [PATCH] spi: imx: Check for allocation failure earlier

In case of spi_alloc_master() failure it is better to return the
error immediately, so move the error check right after the allocation.

Signed-off-by: Fabio Estevam <fabio.estevam-3arQi8VN3Tc@public.gmane.org>
Signed-off-by: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---
 drivers/spi/spi-imx.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index e544f45348cc..f9698b7aeb3b 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -1169,15 +1169,15 @@ static int spi_imx_probe(struct platform_device *pdev)
 	}
 
 	master = spi_alloc_master(&pdev->dev, sizeof(struct spi_imx_data));
+	if (!master)
+		return -ENOMEM;
+
 	ret = of_property_read_u32(np, "fsl,spi-rdy-drctl", &spi_drctl);
 	if ((ret < 0) || (spi_drctl >= 0x3)) {
 		/* '11' is reserved */
 		spi_drctl = 0;
 	}
 
-	if (!master)
-		return -ENOMEM;
-
 	platform_set_drvdata(pdev, master);
 
 	master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32);
-- 
2.11.0

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