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spi: lpspi: fix memory leak in fsl_lpspi_probe 

commit 057b8945f7 upstream.

In fsl_lpspi_probe an SPI controller is allocated either via
spi_alloc_slave or spi_alloc_master. In all but one error cases this
controller is put by going to error handling code. This commit fixes the
case when pm_runtime_get_sync fails and it should go to the error
handling path.

Fixes: 944c01a889 ("spi: lpspi: enable runtime pm for lpspi")
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Link: https://lore.kernel.org/r/20190930034602.1467-1-navid.emamdoost@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
Navid Emamdoost 2019-09-29 22:46:01 -05:00 committed by Greg Kroah-Hartman
parent 091f7685cb
commit bf3b4bc7bb
1 changed files with 1 additions and 1 deletions
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2
drivers/spi/spi-fsl-lpspi.c
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@ -938,7 +938,7 @@ static int fsl_lpspi_probe(struct platform_device *pdev)
ret = pm_runtime_get_sync(fsl_lpspi->dev);
if (ret < 0) {
dev_err(fsl_lpspi->dev, "failed to enable clock\n");
return ret;
goto out_controller_put;
}
temp = readl(fsl_lpspi->base + IMX7ULP_PARAM);