Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
iio: adc: rzg2l_adc: Simplify the locking scheme in rzg2l_adc_read_raw()
Simplify the locking scheme in rzg2l_adc_read_raw() by using
guard(mutex)().
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://patch.msgid.link/20241206111337.726244-8-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
authored by
Claudiu Beznea
and committed by
Jonathan Cameron
5d7fb2d5
b7549624
+7
-6
+7
-6
drivers/iio/adc/rzg2l_adc.c
+7
-6
drivers/iio/adc/rzg2l_adc.c
···
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*/
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#include <linux/bitfield.h>
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+
#include <linux/cleanup.h>
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#include <linux/completion.h>
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#include <linux/delay.h>
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#include <linux/iio/iio.h>
···
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u8 ch;
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switch (mask) {
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-
case IIO_CHAN_INFO_RAW:
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case IIO_CHAN_INFO_RAW: {
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if (chan->type != IIO_VOLTAGE)
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return -EINVAL;
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-
mutex_lock(&adc->lock);
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guard(mutex)(&adc->lock);
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ch = chan->channel & RZG2L_ADC_CHN_MASK;
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ret = rzg2l_adc_conversion(indio_dev, adc, ch);
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-
if (ret) {
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mutex_unlock(&adc->lock);
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if (ret)
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return ret;
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}
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*val = adc->last_val[ch];
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mutex_unlock(&adc->lock);
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return IIO_VAL_INT;
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}
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default:
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return -EINVAL;