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hwmon: (bt1-pvt) Cache current update timeout
[ Upstream commit 0015503 ] Instead of converting the update timeout data to the milliseconds each time on the read procedure let's preserve the currently set timeout in the dedicated driver private data cache. The cached value will be then used in the timeout read method and in the alarm-less data conversion to prevent the caller task hanging up in case if the PVT sensor is suddenly powered down. Fixes: 87976ce ("hwmon: Add Baikal-T1 PVT sensor driver") Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Link: https://lore.kernel.org/r/20200920110924.19741-3-Sergey.Semin@baikalelectronics.ru Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Sasha Levin <sashal@kernel.org>
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