Patch "regulator: pwm-regulator: Add validity checks in continuous .get_voltage" has been added to the 5.4-stable tree

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



This is a note to let you know that I've just added the patch titled

    regulator: pwm-regulator: Add validity checks in continuous .get_voltage

to the 5.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     regulator-pwm-regulator-add-validity-checks-in-conti.patch
and it can be found in the queue-5.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit b24a079442be63e18533fbc6eae89a1c45a03cc1
Author: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
Date:   Sat Jan 13 23:46:26 2024 +0100

    regulator: pwm-regulator: Add validity checks in continuous .get_voltage
    
    [ Upstream commit c92688cac239794e4a1d976afa5203a4d3a2ac0e ]
    
    Continuous regulators can be configured to operate only in a certain
    duty cycle range (for example from 0..91%). Add a check to error out if
    the duty cycle translates to an unsupported (or out of range) voltage.
    
    Suggested-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
    Signed-off-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
    Link: https://msgid.link/r/20240113224628.377993-2-martin.blumenstingl@xxxxxxxxxxxxxx
    Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/regulator/pwm-regulator.c b/drivers/regulator/pwm-regulator.c
index 0a9d61a91f436..1b06aaaaf8b8e 100644
--- a/drivers/regulator/pwm-regulator.c
+++ b/drivers/regulator/pwm-regulator.c
@@ -158,6 +158,9 @@ static int pwm_regulator_get_voltage(struct regulator_dev *rdev)
 	pwm_get_state(drvdata->pwm, &pstate);
 
 	voltage = pwm_get_relative_duty_cycle(&pstate, duty_unit);
+	if (voltage < min(max_uV_duty, min_uV_duty) ||
+	    voltage > max(max_uV_duty, min_uV_duty))
+		return -ENOTRECOVERABLE;
 
 	/*
 	 * The dutycycle for min_uV might be greater than the one for max_uV.




[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux