[ Upstream commit 2a5b3370a1d9750eca325292e291c8c7cb8cf2e0 ]
axi_fan_control_irq_handler(), dependent on the private
axi_fan_control_data structure, might be called before the hwmon
device is registered. That will cause an "Unable to handle kernel
NULL pointer dereference" error.
Fixes: 8412b410fa5e ("hwmon: Support ADI Fan Control IP")
Signed-off-by: Dragos Bogdan <dragos.bogdan@analog.com>
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20231025132100.649499-1-nuno.sa@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 2aee7e67bee7a5aa741bad6a0a472f108b29ad40 ]
The HW has some predefined points where it will associate a PWM value.
However some users might want to better set these points to their
usecases. This patch exposes these points as pwm auto_points:
* pwm1_auto_point1_temp_hyst: temperature threshold below which PWM should
be 0%;
* pwm1_auto_point1_temp: temperature threshold above which PWM should be
25%;
* pwm1_auto_point2_temp_hyst: temperature threshold below which PWM should
be 25%;
* pwm1_auto_point2_temp: temperature threshold above which PWM should be
50%;
* pwm1_auto_point3_temp_hyst: temperature threshold below which PWM should
be 50%;
* pwm1_auto_point3_temp: temperature threshold above which PWM should be
75%;
* pwm1_auto_point4_temp_hyst: temperature threshold below which PWM should
be 75%;
* pwm1_auto_point4_temp: temperature threshold above which PWM should be
100%;
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20210811114853.159298-4-nuno.sa@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Stable-dep-of: 2a5b3370a1d9 ("hwmon: (axi-fan-control) Fix possible NULL pointer dereference")
Signed-off-by: Sasha Levin <sashal@kernel.org>
