diff options
| author | Nicholas Mc Guire <hofrat@osadl.org> | 2018-11-22 08:46:43 +0100 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2018-11-25 11:38:36 +0100 |
| commit | aad172b017617994343e36d8659c69e14cd694fd (patch) | |
| tree | ef15541184983a031b33e815217aa9111e80e695 /drivers/iio | |
| parent | staging: iio: ad5933: add device tree support (diff) | |
| download | linux-aad172b017617994343e36d8659c69e14cd694fd.tar.xz linux-aad172b017617994343e36d8659c69e14cd694fd.zip | |
iio: adc: meson-saradc: check for devm_kasprintf failure
devm_kasprintf() may return NULL on failure of internal allocation thus
the assignments to init.name are not safe if not checked. On error
meson_sar_adc_clk_init() returns negative values so -ENOMEM in the
(unlikely) failure case of devm_kasprintf() should be fine here.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Fixes: 3adbf3427330 ("iio: adc: add a driver for the SAR ADC found in Amlogic Meson SoCs")
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/adc/meson_saradc.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c index 26011254ffbc..6155d26091eb 100644 --- a/drivers/iio/adc/meson_saradc.c +++ b/drivers/iio/adc/meson_saradc.c @@ -658,6 +658,9 @@ static int meson_sar_adc_clk_init(struct iio_dev *indio_dev, init.name = devm_kasprintf(&indio_dev->dev, GFP_KERNEL, "%pOF#adc_div", indio_dev->dev.of_node); + if (!init.name) + return -ENOMEM; + init.flags = 0; init.ops = &clk_divider_ops; clk_parents[0] = __clk_get_name(priv->clkin); @@ -677,6 +680,9 @@ static int meson_sar_adc_clk_init(struct iio_dev *indio_dev, init.name = devm_kasprintf(&indio_dev->dev, GFP_KERNEL, "%pOF#adc_en", indio_dev->dev.of_node); + if (!init.name) + return -ENOMEM; + init.flags = CLK_SET_RATE_PARENT; init.ops = &clk_gate_ops; clk_parents[0] = __clk_get_name(priv->adc_div_clk); |