aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/spi
diff options
context:
space:
mode:
authorTrent Piepho <tpiepho@impinj.com>2017-10-31 12:49:05 -0700
committerMark Brown <broonie@kernel.org>2017-11-10 21:28:10 +0000
commit4e21791e741c7c1b962c4a8327529f52310b9aac (patch)
treec0d85042521e6549a57bb189d522177e43f495a7 /drivers/spi
parent881a0b993e9f065cbb3673c94c395fa1de24bdcc (diff)
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@kernel.org> CC: Sascha Hauer <kernel@pengutronix.de> CC: Fabio Estevam <fabio.estevam@nxp.com> CC: Mark Brown <broonie@kernel.org> CC: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Trent Piepho <tpiepho@impinj.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi-imx.c4
1 files changed, 3 insertions, 1 deletions
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:

Privacy Policy