diff options
| author | Trent Piepho <tpiepho@impinj.com> | 2017-10-31 20:49:05 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2017-11-10 22:28:10 +0100 |
| commit | 4e21791e741c7c1b962c4a8327529f52310b9aac (patch) | |
| tree | c0d85042521e6549a57bb189d522177e43f495a7 | |
| parent | spi: imx: GPIO based chip selects should not be required (diff) | |
| download | linux-4e21791e741c7c1b962c4a8327529f52310b9aac.tar.xz linux-4e21791e741c7c1b962c4a8327529f52310b9aac.zip | |
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>
| -rw-r--r-- | drivers/spi/spi-imx.c | 4 |
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: |