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[ Upstream commit 8ebfd09255219ae55f8a101f6aeb0f64dd780d88 ]
Even if it's not critical, the avoidance of checking the error code
from devm_mutex_init() call today diminishes the point of using devm
variant of it. Tomorrow it may even leak something. Add the missed
check.
Fixes: 938fd562b974 ("iio: adc: Add support for AD4000")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20241030162013.2100253-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 62dd96ac9cdf2814f41cfc55ecaf22a28aad6ccb ]
Fix reading unsigned data from the AD4000 ADC via the _raw sysfs
attribute by ensuring that *val is set before returning from
ad4000_single_conversion(). This was not being set in any code path
and was causing the attribute to return a random value.
Fixes: 938fd562b974 ("iio: adc: Add support for AD4000")
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20241030-iio-adc-ad4000-fix-reading-unsigned-data-v1-1-2e28dd75fe29@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Add support for AD4000 series of low noise, low power, high speed,
successive approximation register (SAR) ADCs.
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com>
Link: https://patch.msgid.link/356109ac61182f16f2379d5d0cadccfe017f505b.1720810545.git.marcelo.schmitt@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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