Applied "spi: imx: Fix failure path leak on GPIO request error" to the spi tree

[Mark Brown <broonie@xxxxxxxxxx>]

The patch

   spi: imx: Fix failure path leak on GPIO request error

has been applied to the spi tree at

   https://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 4e21791e741c7c1b962c4a8327529f52310b9aac Mon Sep 17 00:00:00 2001
From: Trent Piepho <tpiepho@xxxxxxxxxx>
Date: Tue, 31 Oct 2017 12:49:05 -0700
Subject: [PATCH] spi: imx: Fix failure path leak on GPIO request error

If the code that requests any chip select GPIOs fails, the cleanup of
spi_bitbang_start() by calling spi_bitbang_stop() is not done.  Add this
to the failure path.

Note that spi_bitbang_start() has to be called before requesting GPIOs
because the GPIO data in the spi master is populated when the master is
registed, and that doesn't happen until spi_bitbang_start() is called.

CC: Shawn Guo <shawnguo@xxxxxxxxxx>
CC: Sascha Hauer <kernel@xxxxxxxxxxxxxx>
CC: Fabio Estevam <fabio.estevam@xxxxxxx>
CC: Mark Brown <broonie@xxxxxxxxxx>
CC: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
Signed-off-by: Trent Piepho <tpiepho@xxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
---
 drivers/spi/spi-imx.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index 70dcc8ee1f6b..fdbbdac66839 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -1633,7 +1633,7 @@ static int spi_imx_probe(struct platform_device *pdev)
 			if (ret) {
 				dev_err(&pdev->dev, "Can't get CS GPIO %i\n",
 					master->cs_gpios[i]);
-				goto out_clk_put;
+				goto out_spi_bitbang;
 			}
 		}
 	}
@@ -1650,6 +1650,8 @@ static int spi_imx_probe(struct platform_device *pdev)
 	clk_disable(spi_imx->clk_per);
 	return ret;
 
+out_spi_bitbang:
+	spi_bitbang_stop(&spi_imx->bitbang);
 out_clk_put:
 	clk_disable_unprepare(spi_imx->clk_ipg);
 out_put_per:
-- 
2.15.0

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