diff options
| author |   Trent Piepho <tpiepho@impinj.com> | 2017-10-26 18:08:39 -0700 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2017-10-31 11:20:23 +0000 |
| commit | 974488e4ce1ed0b39f2c711c13f523c5912128a1 (patch) | |
| tree | 50cdde5f72aac13d294cfb36d4b7fbfd348581fd /drivers/spi | |
| parent | spi: imx: Add support for SPI Slave mode (diff) | |
| download | linux-dev-974488e4ce1ed0b39f2c711c13f523c5912128a1.tar.xz linux-dev-974488e4ce1ed0b39f2c711c13f523c5912128a1.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.
Fix this by moving spi_bitbang_start() to after the code that requets
GPIOs. The GPIOs are dev managed and don't need explicit cleanup.
Since spi_bitbang_start() is now the last operation, it doesn't need
to be cleaned up in the failure path.
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>
Reviewed-by: 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.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index fe35aaea323b..5ddd32ba2521 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -1613,11 +1613,6 @@ static int spi_imx_probe(struct platform_device *pdev) spi_imx->devtype_data->intctrl(spi_imx, 0); master->dev.of_node = pdev->dev.of_node; - ret = spi_bitbang_start(&spi_imx->bitbang); - if (ret) { - dev_err(&pdev->dev, "bitbang start failed with %d\n", ret); - goto out_clk_put; - } if (!spi_imx->slave_mode) { if (!master->cs_gpios) { @@ -1641,6 +1636,12 @@ static int spi_imx_probe(struct platform_device *pdev) } } + ret = spi_bitbang_start(&spi_imx->bitbang); + if (ret) { + dev_err(&pdev->dev, "bitbang start failed with %d\n", ret); + goto out_clk_put; + } + dev_info(&pdev->dev, "probed\n"); clk_disable(spi_imx->clk_ipg); |