[PATCH] Revert "hwmon: (pmbus) Add regulator supply into macro"

[PATCH] Revert "hwmon: (pmbus) Add regulator supply into macro"

[Guenter Roeck]

This reverts commit 54cc3dbfc10dc3db7cb1cf49aee4477a8398fbde.

Zev Weiss reports that the reverted patch may cause a regulator
undercount. Here is his report:

... having regulator-dummy set as a supply on my PMBus regulators
(instead of having them as their own top-level regulators without
an upstream supply) leads to enable-count underflow errors when
disabling them:

    # echo 0 > /sys/bus/platform/devices/efuse01/state
    [  906.094477] regulator-dummy: Underflow of regulator enable count
    [  906.100563] Failed to disable vout: -EINVAL
    [  136.992676] reg-userspace-consumer efuse01: Failed to configure state: -22

Zev reports that reverting the patch fixes the problem. So let's do that
for now.

Fixes: 54cc3dbfc10d ("hwmon: (pmbus) Add regulator supply into macro")
Cc: Marcello Sylvester Bauer <sylv@sylv.io>
Reported-by: Zev Weiss <zev@bewilderbeest.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
 drivers/hwmon/pmbus/pmbus.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/hwmon/pmbus/pmbus.h b/drivers/hwmon/pmbus/pmbus.h
index 7daaf0caf4d3..10fb17879f8e 100644
--- a/drivers/hwmon/pmbus/pmbus.h
+++ b/drivers/hwmon/pmbus/pmbus.h
@@ -467,7 +467,6 @@ extern const struct regulator_ops pmbus_regulator_ops;
 #define PMBUS_REGULATOR_STEP(_name, _id, _voltages, _step)  \
 	[_id] = {						\
 		.name = (_name # _id),				\
-		.supply_name = "vin",				\
 		.id = (_id),					\
 		.of_match = of_match_ptr(_name # _id),		\
 		.regulators_node = of_match_ptr("regulators"),	\
-- 
2.36.2

Re: [PATCH] Revert "hwmon: (pmbus) Add regulator supply into macro"

[Marcello Sylverster Bauer]

On 11/5/22 00:46, Guenter Roeck wrote:
> This reverts commit 54cc3dbfc10dc3db7cb1cf49aee4477a8398fbde.
>
> Zev Weiss reports that the reverted patch may cause a regulator
> undercount. Here is his report:
>
> ... having regulator-dummy set as a supply on my PMBus regulators
> (instead of having them as their own top-level regulators without
> an upstream supply) leads to enable-count underflow errors when
> disabling them:
>
>      # echo 0 > /sys/bus/platform/devices/efuse01/state
>      [  906.094477] regulator-dummy: Underflow of regulator enable count
>      [  906.100563] Failed to disable vout: -EINVAL
>      [  136.992676] reg-userspace-consumer efuse01: Failed to configure state: -22
>
> Zev reports that reverting the patch fixes the problem. So let's do that
> for now.
>
> Fixes: 54cc3dbfc10d ("hwmon: (pmbus) Add regulator supply into macro")
> Cc: Marcello Sylvester Bauer <sylv@sylv.io>
> Reported-by: Zev Weiss <zev@bewilderbeest.net>
> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Marcello Sylvester Bauer <sylv@sylv.io>
> ---
>   drivers/hwmon/pmbus/pmbus.h | 1 -
>   1 file changed, 1 deletion(-)
>
> diff --git a/drivers/hwmon/pmbus/pmbus.h b/drivers/hwmon/pmbus/pmbus.h
> index 7daaf0caf4d3..10fb17879f8e 100644
> --- a/drivers/hwmon/pmbus/pmbus.h
> +++ b/drivers/hwmon/pmbus/pmbus.h
> @@ -467,7 +467,6 @@ extern const struct regulator_ops pmbus_regulator_ops;
>   #define PMBUS_REGULATOR_STEP(_name, _id, _voltages, _step)  \
>   	[_id] = {						\
>   		.name = (_name # _id),				\
> -		.supply_name = "vin",				\
>   		.id = (_id),					\
>   		.of_match = of_match_ptr(_name # _id),		\
>   		.regulators_node = of_match_ptr("regulators"),	\