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If the temperature is read before the internal calibration is
completed, the driver returns -EIO. Instead it should return -EAGAIN
to encourage repeating the operation.
Note (groeck): Returning -EAGAIN to userspace may result in hard loops;
some userspace code interprets -EAGAIN as request to retry immediately.
I would prefer -ENODATA, but it turns out that the thermal subsystem only
handles -EAGAIN silently, so we'll have to stick with that.
Signed-off-by: Lars Povlsen <lars.povlsen@microchip.com>
Link: https://lore.kernel.org/r/20200903134704.8949-1-lars.povlsen@microchip.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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The sparse tool complains as follows:
drivers/hwmon/sparx5-temp.c:150:27: warning:
symbol 's5_temp_match' was not declared. Should it be static?
This variable is not used outside of sparx5-temp.c, this commit
marks it static.
Fixes: c2cb4b5777e1 ("hwmon: sparx5: Add Sparx5 SoC temperature driver")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20200721134919.34033-1-weiyongjun1@huawei.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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This patch adds a temperature sensor driver to the Sparx5 SoC.
Signed-off-by: Lars Povlsen <lars.povlsen@microchip.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20200618135951.25441-4-lars.povlsen@microchip.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Lars Povlsen
Wei Yongjun