hwmon: (aspeed-pwm-tacho) mutex for tach reading

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[ Upstream commit 1168491e7f ]

the ASPEED_PTCR_RESULT Register can only hold the result for a
single fan input. Adding a mutex to protect the register until the
reading is done.

Signed-off-by: Loic Prylli <lprylli@netflix.com>
Signed-off-by: Alexander Hansen <alexander.hansen@9elements.com>
Fixes: 2d7a548a3e ("drivers: hwmon: Support for ASPEED PWM/Fan tach")
Link: https://lore.kernel.org/r/121d888762a1232ef403cf35230ccf7b3887083a.1699007401.git.alexander.hansen@9elements.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Loic Prylli 2023-11-03 11:30:55 +01:00 • committed by Greg Kroah-Hartman

parent 4065746686

commit a3156be201

1 changed files with 7 additions and 0 deletions

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drivers/hwmon/aspeed-pwm-tacho.c

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