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Before commit86585c6197("hwmon: (pwm-fan) stop using legacy PWM functions and some cleanups") pwm_apply_state() was called unconditionally in pwm_fan_probe(). In this commit this direct call was replaced by a call to __set_pwm(ct, MAX_PWM) which however is a noop if ctx->pwm_value already matches the value to set. After probe the fan is supposed to run at full speed, and the internal driver state suggests it does, but this isn't asserted and depending on bootloader and pwm low-level driver, the fan might just be off. So drop setting pwm_value to MAX_PWM to ensure the check in __set_pwm doesn't make it exit early and the fan goes on as intended. Cc: stable@vger.kernel.org Fixes:86585c6197("hwmon: (pwm-fan) stop using legacy PWM functions and some cleanups") Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20211130092212.17783-1-billy_tsai@aspeedtech.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.