Re: [PATCH] power: supply: core: return -EAGAIN on uninitialized read temp

[Greg KH <gregkh@linuxfoundation.org>]

On Thu, Jul 04, 2024 at 10:52:08AM +0200, Neil Armstrong wrote:
> If the thermal core tries to update the temperature from an
> uninitialized power supply, it will swawn the following warning:
> thermal thermal_zoneXX: failed to read out thermal zone (-19)
> 
> But reading from an uninitialized power supply should not be
> considered as a fatal error, but the thermal core expects
> the -EAGAIN error to be returned in this particular case.
> 
> So convert -ENODEV as -EAGAIN to express the fact that reading
> temperature from an uninitialized power supply shouldn't be
> a fatal error, but should indicate to the thermal zone it should
> retry later.
> 
> It notably removes such messages on Qualcomm platforms using the
> qcom_battmgr driver spawning warnings until the aDSP firmware
> gets up and the battery manager reports valid data.
> 
> Link: https://lore.kernel.org/all/2ed4c630-204a-4f80-a37f-f2ca838eb455@linaro.org/
> Fixes: 5bc28b93a36e ("power_supply: power_supply_read_temp only if use_cnt > 0")
> Fixes: 3be330bf8860 ("power_supply: Register battery as a thermal zone")
> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
> ---
>  drivers/power/supply/power_supply_core.c | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)

Hi,

This is the friendly patch-bot of Greg Kroah-Hartman.  You have sent him
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