diff options
author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2022-01-29 11:32:47 +0300 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-03-02 13:42:53 +0300 |
commit | 1aa12ecfdcbafebc218910ec47acf6262e600cf5 (patch) | |
tree | c7a6a080c4b3cb15a4247e854b7e9c495fc7d953 | |
parent | afbeee13beb5f0e7b88b7ca80278dec6f5eea584 (diff) | |
download | linux-1aa12ecfdcbafebc218910ec47acf6262e600cf5.tar.xz |
iio: adc: men_z188_adc: Fix a resource leak in an error handling path
commit e0a2e37f303828d030a83f33ffe14b36cb88d563 upstream.
If iio_device_register() fails, a previous ioremap() is left unbalanced.
Update the error handling path and add the missing iounmap() call, as
already done in the remove function.
Fixes: 74aeac4da66f ("iio: adc: Add MEN 16z188 ADC driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/320fc777863880247c2aff4a9d1a54ba69abf080.1643445149.git.christophe.jaillet@wanadoo.fr
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r-- | drivers/iio/adc/men_z188_adc.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/iio/adc/men_z188_adc.c b/drivers/iio/adc/men_z188_adc.c index 42ea8bc7e780..adc5ceaef8c9 100644 --- a/drivers/iio/adc/men_z188_adc.c +++ b/drivers/iio/adc/men_z188_adc.c @@ -103,6 +103,7 @@ static int men_z188_probe(struct mcb_device *dev, struct z188_adc *adc; struct iio_dev *indio_dev; struct resource *mem; + int ret; indio_dev = devm_iio_device_alloc(&dev->dev, sizeof(struct z188_adc)); if (!indio_dev) @@ -128,8 +129,14 @@ static int men_z188_probe(struct mcb_device *dev, adc->mem = mem; mcb_set_drvdata(dev, indio_dev); - return iio_device_register(indio_dev); + ret = iio_device_register(indio_dev); + if (ret) + goto err_unmap; + + return 0; +err_unmap: + iounmap(adc->base); err: mcb_release_mem(mem); return -ENXIO; |