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iio: adc: xilinx-xadc: use devm_krealloc()

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Use the managed variant of krealloc() and shrink the code a bit.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20200824173859.4910-4-brgl@bgdev.pl
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bartosz Golaszewski 2020-08-24 19:38:59 +02:00 committed by Greg Kroah-Hartman
parent bb19133fc8
commit 750628c79b
1 changed files with 8 additions and 8 deletions
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16
drivers/iio/adc/xilinx-xadc-core.c
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@ -1092,6 +1092,7 @@ MODULE_DEVICE_TABLE(of, xadc_of_match_table);
static int xadc_parse_dt(struct iio_dev *indio_dev, struct device_node *np,
unsigned int *conf)
{
struct device *dev = indio_dev->dev.parent;
struct xadc *xadc = iio_priv(indio_dev);
struct iio_chan_spec *channels, *chan;
struct device_node *chan_node, *child;
@ -1136,7 +1137,8 @@ static int xadc_parse_dt(struct iio_dev *indio_dev, struct device_node *np,
*conf |= XADC_CONF0_MUX | XADC_CONF0_CHAN(ext_mux_chan);
}
channels = kmemdup(xadc_channels, sizeof(xadc_channels), GFP_KERNEL);
channels = devm_kmemdup(dev, xadc_channels,
sizeof(xadc_channels), GFP_KERNEL);
if (!channels)
return -ENOMEM;
@ -1172,8 +1174,9 @@ static int xadc_parse_dt(struct iio_dev *indio_dev, struct device_node *np,
of_node_put(chan_node);
indio_dev->num_channels = num_channels;
indio_dev->channels = krealloc(channels, sizeof(*channels) *
num_channels, GFP_KERNEL);
indio_dev->channels = devm_krealloc(dev, channels,
sizeof(*channels) * num_channels,
GFP_KERNEL);
/* If we can't resize the channels array, just use the original */
if (!indio_dev->channels)
indio_dev->channels = channels;
@ -1225,14 +1228,14 @@ static int xadc_probe(struct platform_device *pdev)
ret = xadc_parse_dt(indio_dev, pdev->dev.of_node, &conf0);
if (ret)
goto err_device_free;
return ret;
if (xadc->ops->flags & XADC_FLAGS_BUFFERED) {
ret = iio_triggered_buffer_setup(indio_dev,
&iio_pollfunc_store_time, &xadc_trigger_handler,
&xadc_buffer_ops);
if (ret)
goto err_device_free;
return ret;
xadc->convst_trigger = xadc_alloc_trigger(indio_dev, "convst");
if (IS_ERR(xadc->convst_trigger)) {
@ -1350,8 +1353,6 @@ static int xadc_probe(struct platform_device *pdev)
err_triggered_buffer_cleanup:
if (xadc->ops->flags & XADC_FLAGS_BUFFERED)
iio_triggered_buffer_cleanup(indio_dev);
err_device_free:
kfree(indio_dev->channels);
return ret;
}
@ -1371,7 +1372,6 @@ static int xadc_remove(struct platform_device *pdev)
cancel_delayed_work_sync(&xadc->zynq_unmask_work);
clk_disable_unprepare(xadc->clk);
kfree(xadc->data);
kfree(indio_dev->channels);
return 0;
}