* [PATCH v3 0/2] regulator: core: Fix ops->enable/disable usage
@ 2014-02-20 16:36 ` Markus Pargmann
0 siblings, 0 replies; 16+ messages in thread
From: Markus Pargmann @ 2014-02-20 16:36 UTC (permalink / raw)
To: Mark Brown, Liam Girdwood
Cc: linux-kernel, linux-arm-kernel, kernel, Markus Pargmann
Hi,
These two patches replace all ops->enable/disable by
_regulator_do_disable/enable function calls. These wrappers also handle gpio
regulators.
v3 adds a comment about the moved _notifier_call_chain() function calls and
removes a unused variable from the core driver in patch 2
(Replace direct ops->disable usage).
Regards,
Markus
Markus Pargmann (2):
regulator: core: Replace direct ops->enable usage
regulator: core: Replace direct ops->disable usage
drivers/regulator/core.c | 46 +++++++++++++++++++---------------------------
1 file changed, 19 insertions(+), 27 deletions(-)
--
1.8.5.3
^ permalink raw reply [flat|nested] 16+ messages in thread
* [PATCH v3 0/2] regulator: core: Fix ops->enable/disable usage
@ 2014-02-20 16:36 ` Markus Pargmann
0 siblings, 0 replies; 16+ messages in thread
From: Markus Pargmann @ 2014-02-20 16:36 UTC (permalink / raw)
To: linux-arm-kernel
Hi,
These two patches replace all ops->enable/disable by
_regulator_do_disable/enable function calls. These wrappers also handle gpio
regulators.
v3 adds a comment about the moved _notifier_call_chain() function calls and
removes a unused variable from the core driver in patch 2
(Replace direct ops->disable usage).
Regards,
Markus
Markus Pargmann (2):
regulator: core: Replace direct ops->enable usage
regulator: core: Replace direct ops->disable usage
drivers/regulator/core.c | 46 +++++++++++++++++++---------------------------
1 file changed, 19 insertions(+), 27 deletions(-)
--
1.8.5.3
^ permalink raw reply [flat|nested] 16+ messages in thread
* [PATCH v3 1/2] regulator: core: Replace direct ops->enable usage
2014-02-20 16:36 ` Markus Pargmann
@ 2014-02-20 16:36 ` Markus Pargmann
-1 siblings, 0 replies; 16+ messages in thread
From: Markus Pargmann @ 2014-02-20 16:36 UTC (permalink / raw)
To: Mark Brown, Liam Girdwood
Cc: linux-kernel, linux-arm-kernel, kernel, Markus Pargmann, stable
There are some direct ops->enable in the regulator core driver. This is
a potential issue as the function _regulator_do_enable() handles gpio
regulators and the normal ops->enable calls. These gpio regulators are
simply ignored when ops->enable is called directly.
One possible bug is that boot-on and always-on gpio regulators are not
enabled on registration.
This patch replaces all ops->enable calls by _regulator_do_enable.
Cc: <stable@vger.kernel.org> # 3.10+
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
---
drivers/regulator/core.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 16a309e..017f5cb 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -953,6 +953,8 @@ static int machine_constraints_current(struct regulator_dev *rdev,
return 0;
}
+static int _regulator_do_enable(struct regulator_dev *rdev);
+
/**
* set_machine_constraints - sets regulator constraints
* @rdev: regulator source
@@ -1013,9 +1015,8 @@ static int set_machine_constraints(struct regulator_dev *rdev,
/* If the constraints say the regulator should be on at this point
* and we have control then make sure it is enabled.
*/
- if ((rdev->constraints->always_on || rdev->constraints->boot_on) &&
- ops->enable) {
- ret = ops->enable(rdev);
+ if (rdev->constraints->always_on || rdev->constraints->boot_on) {
+ ret = _regulator_do_enable(rdev);
if (ret < 0) {
rdev_err(rdev, "failed to enable\n");
goto out;
@@ -3633,9 +3634,8 @@ int regulator_suspend_finish(void)
struct regulator_ops *ops = rdev->desc->ops;
mutex_lock(&rdev->mutex);
- if ((rdev->use_count > 0 || rdev->constraints->always_on) &&
- ops->enable) {
- error = ops->enable(rdev);
+ if (rdev->use_count > 0 || rdev->constraints->always_on) {
+ error = _regulator_do_enable(rdev);
if (error)
ret = error;
} else {
--
1.8.5.3
^ permalink raw reply related [flat|nested] 16+ messages in thread
* [PATCH v3 1/2] regulator: core: Replace direct ops->enable usage
@ 2014-02-20 16:36 ` Markus Pargmann
0 siblings, 0 replies; 16+ messages in thread
From: Markus Pargmann @ 2014-02-20 16:36 UTC (permalink / raw)
To: linux-arm-kernel
There are some direct ops->enable in the regulator core driver. This is
a potential issue as the function _regulator_do_enable() handles gpio
regulators and the normal ops->enable calls. These gpio regulators are
simply ignored when ops->enable is called directly.
One possible bug is that boot-on and always-on gpio regulators are not
enabled on registration.
This patch replaces all ops->enable calls by _regulator_do_enable.
Cc: <stable@vger.kernel.org> # 3.10+
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
---
drivers/regulator/core.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 16a309e..017f5cb 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -953,6 +953,8 @@ static int machine_constraints_current(struct regulator_dev *rdev,
return 0;
}
+static int _regulator_do_enable(struct regulator_dev *rdev);
+
/**
* set_machine_constraints - sets regulator constraints
* @rdev: regulator source
@@ -1013,9 +1015,8 @@ static int set_machine_constraints(struct regulator_dev *rdev,
/* If the constraints say the regulator should be on at this point
* and we have control then make sure it is enabled.
*/
- if ((rdev->constraints->always_on || rdev->constraints->boot_on) &&
- ops->enable) {
- ret = ops->enable(rdev);
+ if (rdev->constraints->always_on || rdev->constraints->boot_on) {
+ ret = _regulator_do_enable(rdev);
if (ret < 0) {
rdev_err(rdev, "failed to enable\n");
goto out;
@@ -3633,9 +3634,8 @@ int regulator_suspend_finish(void)
struct regulator_ops *ops = rdev->desc->ops;
mutex_lock(&rdev->mutex);
- if ((rdev->use_count > 0 || rdev->constraints->always_on) &&
- ops->enable) {
- error = ops->enable(rdev);
+ if (rdev->use_count > 0 || rdev->constraints->always_on) {
+ error = _regulator_do_enable(rdev);
if (error)
ret = error;
} else {
--
1.8.5.3
^ permalink raw reply related [flat|nested] 16+ messages in thread
* [PATCH v3 2/2] regulator: core: Replace direct ops->disable usage
2014-02-20 16:36 ` Markus Pargmann
@ 2014-02-20 16:36 ` Markus Pargmann
-1 siblings, 0 replies; 16+ messages in thread
From: Markus Pargmann @ 2014-02-20 16:36 UTC (permalink / raw)
To: Mark Brown, Liam Girdwood
Cc: linux-kernel, linux-arm-kernel, kernel, Markus Pargmann, stable
There are many places where ops->disable is called directly. Instead we
should use _regulator_do_disable() which also handles gpio regulators.
To be able to use the wrapper function from _regulator_force_disable(),
I moved the _notifier_call_chain() call from _regulator_do_disable() to
_regulator_disable(). This way, _regulator_force_disable() can use
different flags for _notifier_call_chain() without calling it twice.
Cc: <stable@vger.kernel.org> # 3.10+
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
---
drivers/regulator/core.c | 34 +++++++++++++---------------------
1 file changed, 13 insertions(+), 21 deletions(-)
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 017f5cb..e7a83e5 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1908,8 +1908,6 @@ static int _regulator_do_disable(struct regulator_dev *rdev)
trace_regulator_disable_complete(rdev_get_name(rdev));
- _notifier_call_chain(rdev, REGULATOR_EVENT_DISABLE,
- NULL);
return 0;
}
@@ -1933,6 +1931,8 @@ static int _regulator_disable(struct regulator_dev *rdev)
rdev_err(rdev, "failed to disable\n");
return ret;
}
+ _notifier_call_chain(rdev, REGULATOR_EVENT_DISABLE,
+ NULL);
}
rdev->use_count = 0;
@@ -1985,20 +1985,16 @@ static int _regulator_force_disable(struct regulator_dev *rdev)
{
int ret = 0;
- /* force disable */
- if (rdev->desc->ops->disable) {
- /* ah well, who wants to live forever... */
- ret = rdev->desc->ops->disable(rdev);
- if (ret < 0) {
- rdev_err(rdev, "failed to force disable\n");
- return ret;
- }
- /* notify other consumers that power has been forced off */
- _notifier_call_chain(rdev, REGULATOR_EVENT_FORCE_DISABLE |
- REGULATOR_EVENT_DISABLE, NULL);
+ ret = _regulator_do_disable(rdev);
+ if (ret < 0) {
+ rdev_err(rdev, "failed to force disable\n");
+ return ret;
}
- return ret;
+ _notifier_call_chain(rdev, REGULATOR_EVENT_FORCE_DISABLE |
+ REGULATOR_EVENT_DISABLE, NULL);
+
+ return 0;
}
/**
@@ -3631,8 +3627,6 @@ int regulator_suspend_finish(void)
mutex_lock(®ulator_list_mutex);
list_for_each_entry(rdev, ®ulator_list, list) {
- struct regulator_ops *ops = rdev->desc->ops;
-
mutex_lock(&rdev->mutex);
if (rdev->use_count > 0 || rdev->constraints->always_on) {
error = _regulator_do_enable(rdev);
@@ -3641,12 +3635,10 @@ int regulator_suspend_finish(void)
} else {
if (!have_full_constraints())
goto unlock;
- if (!ops->disable)
- goto unlock;
if (!_regulator_is_enabled(rdev))
goto unlock;
- error = ops->disable(rdev);
+ error = _regulator_do_disable(rdev);
if (error)
ret = error;
}
@@ -3820,7 +3812,7 @@ static int __init regulator_init_complete(void)
ops = rdev->desc->ops;
c = rdev->constraints;
- if (!ops->disable || (c && c->always_on))
+ if (c && c->always_on)
continue;
mutex_lock(&rdev->mutex);
@@ -3841,7 +3833,7 @@ static int __init regulator_init_complete(void)
/* We log since this may kill the system if it
* goes wrong. */
rdev_info(rdev, "disabling\n");
- ret = ops->disable(rdev);
+ ret = _regulator_do_disable(rdev);
if (ret != 0)
rdev_err(rdev, "couldn't disable: %d\n", ret);
} else {
--
1.8.5.3
^ permalink raw reply related [flat|nested] 16+ messages in thread
* [PATCH v3 2/2] regulator: core: Replace direct ops->disable usage
@ 2014-02-20 16:36 ` Markus Pargmann
0 siblings, 0 replies; 16+ messages in thread
From: Markus Pargmann @ 2014-02-20 16:36 UTC (permalink / raw)
To: linux-arm-kernel
There are many places where ops->disable is called directly. Instead we
should use _regulator_do_disable() which also handles gpio regulators.
To be able to use the wrapper function from _regulator_force_disable(),
I moved the _notifier_call_chain() call from _regulator_do_disable() to
_regulator_disable(). This way, _regulator_force_disable() can use
different flags for _notifier_call_chain() without calling it twice.
Cc: <stable@vger.kernel.org> # 3.10+
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
---
drivers/regulator/core.c | 34 +++++++++++++---------------------
1 file changed, 13 insertions(+), 21 deletions(-)
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 017f5cb..e7a83e5 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1908,8 +1908,6 @@ static int _regulator_do_disable(struct regulator_dev *rdev)
trace_regulator_disable_complete(rdev_get_name(rdev));
- _notifier_call_chain(rdev, REGULATOR_EVENT_DISABLE,
- NULL);
return 0;
}
@@ -1933,6 +1931,8 @@ static int _regulator_disable(struct regulator_dev *rdev)
rdev_err(rdev, "failed to disable\n");
return ret;
}
+ _notifier_call_chain(rdev, REGULATOR_EVENT_DISABLE,
+ NULL);
}
rdev->use_count = 0;
@@ -1985,20 +1985,16 @@ static int _regulator_force_disable(struct regulator_dev *rdev)
{
int ret = 0;
- /* force disable */
- if (rdev->desc->ops->disable) {
- /* ah well, who wants to live forever... */
- ret = rdev->desc->ops->disable(rdev);
- if (ret < 0) {
- rdev_err(rdev, "failed to force disable\n");
- return ret;
- }
- /* notify other consumers that power has been forced off */
- _notifier_call_chain(rdev, REGULATOR_EVENT_FORCE_DISABLE |
- REGULATOR_EVENT_DISABLE, NULL);
+ ret = _regulator_do_disable(rdev);
+ if (ret < 0) {
+ rdev_err(rdev, "failed to force disable\n");
+ return ret;
}
- return ret;
+ _notifier_call_chain(rdev, REGULATOR_EVENT_FORCE_DISABLE |
+ REGULATOR_EVENT_DISABLE, NULL);
+
+ return 0;
}
/**
@@ -3631,8 +3627,6 @@ int regulator_suspend_finish(void)
mutex_lock(®ulator_list_mutex);
list_for_each_entry(rdev, ®ulator_list, list) {
- struct regulator_ops *ops = rdev->desc->ops;
-
mutex_lock(&rdev->mutex);
if (rdev->use_count > 0 || rdev->constraints->always_on) {
error = _regulator_do_enable(rdev);
@@ -3641,12 +3635,10 @@ int regulator_suspend_finish(void)
} else {
if (!have_full_constraints())
goto unlock;
- if (!ops->disable)
- goto unlock;
if (!_regulator_is_enabled(rdev))
goto unlock;
- error = ops->disable(rdev);
+ error = _regulator_do_disable(rdev);
if (error)
ret = error;
}
@@ -3820,7 +3812,7 @@ static int __init regulator_init_complete(void)
ops = rdev->desc->ops;
c = rdev->constraints;
- if (!ops->disable || (c && c->always_on))
+ if (c && c->always_on)
continue;
mutex_lock(&rdev->mutex);
@@ -3841,7 +3833,7 @@ static int __init regulator_init_complete(void)
/* We log since this may kill the system if it
* goes wrong. */
rdev_info(rdev, "disabling\n");
- ret = ops->disable(rdev);
+ ret = _regulator_do_disable(rdev);
if (ret != 0)
rdev_err(rdev, "couldn't disable: %d\n", ret);
} else {
--
1.8.5.3
^ permalink raw reply related [flat|nested] 16+ messages in thread
* Re: [PATCH v3 0/2] regulator: core: Fix ops->enable/disable usage
2014-02-20 16:36 ` Markus Pargmann
@ 2014-02-23 5:12 ` Mark Brown
-1 siblings, 0 replies; 16+ messages in thread
From: Mark Brown @ 2014-02-23 5:12 UTC (permalink / raw)
To: Markus Pargmann; +Cc: Liam Girdwood, linux-kernel, linux-arm-kernel, kernel
[-- Attachment #1: Type: text/plain, Size: 253 bytes --]
On Thu, Feb 20, 2014 at 05:36:02PM +0100, Markus Pargmann wrote:
> Hi,
>
> These two patches replace all ops->enable/disable by
> _regulator_do_disable/enable function calls. These wrappers also handle gpio
> regulators.
Applied both, thanks.
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^ permalink raw reply [flat|nested] 16+ messages in thread
* [PATCH v3 0/2] regulator: core: Fix ops->enable/disable usage
@ 2014-02-23 5:12 ` Mark Brown
0 siblings, 0 replies; 16+ messages in thread
From: Mark Brown @ 2014-02-23 5:12 UTC (permalink / raw)
To: linux-arm-kernel
On Thu, Feb 20, 2014 at 05:36:02PM +0100, Markus Pargmann wrote:
> Hi,
>
> These two patches replace all ops->enable/disable by
> _regulator_do_disable/enable function calls. These wrappers also handle gpio
> regulators.
Applied both, thanks.
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^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: [PATCH v3 0/2] regulator: core: Fix ops->enable/disable usage
2014-02-23 5:12 ` Mark Brown
@ 2014-02-24 17:23 ` Fabio Estevam
-1 siblings, 0 replies; 16+ messages in thread
From: Fabio Estevam @ 2014-02-24 17:23 UTC (permalink / raw)
To: Mark Brown
Cc: Markus Pargmann, Sascha Hauer, Liam Girdwood, linux-arm-kernel,
linux-kernel
On Sun, Feb 23, 2014 at 2:12 AM, Mark Brown <broonie@kernel.org> wrote:
> On Thu, Feb 20, 2014 at 05:36:02PM +0100, Markus Pargmann wrote:
>> Hi,
>>
>> These two patches replace all ops->enable/disable by
>> _regulator_do_disable/enable function calls. These wrappers also handle gpio
>> regulators.
>
> Applied both, thanks.
With these two patches applied I get the following error on
mx6qsabresd running today's linux-next:
vdd1p1: failed to enable
anatop_regulator regulator-1p1.2: failed to register vdd1p1
anatop_regulator: probe of regulator-1p1.2 failed with error -22
vdd3p0: failed to enable
anatop_regulator regulator-3p0.3: failed to register vdd3p0
anatop_regulator: probe of regulator-3p0.3 failed with error -22
vdd2p5: failed to enable
anatop_regulator regulator-2p5.4: failed to register vdd2p5
anatop_regulator: probe of regulator-2p5.4 failed with error -22
vddarm: 725 <--> 1450 mV at 1100 mV
vddpu: 725 <--> 1450 mV at 1100 mV
vddsoc: 725 <--> 1450 mV at 1175 mV
....
pfuze100-regulator 1-0008: Full layer: 1, Metal layer: 0
pfuze100-regulator 1-0008: FAB: 0, FIN: 0
SW1AB: failed to enable
pfuze100-regulator 1-0008: register regulatorSW1AB failed
pfuze100-regulator: probe of 1-0008 failed with error -22
Reverting these two patches the regulators probe successfully.
Any ideas?
Regards,
Fabio Estevam
^ permalink raw reply [flat|nested] 16+ messages in thread
* [PATCH v3 0/2] regulator: core: Fix ops->enable/disable usage
@ 2014-02-24 17:23 ` Fabio Estevam
0 siblings, 0 replies; 16+ messages in thread
From: Fabio Estevam @ 2014-02-24 17:23 UTC (permalink / raw)
To: linux-arm-kernel
On Sun, Feb 23, 2014 at 2:12 AM, Mark Brown <broonie@kernel.org> wrote:
> On Thu, Feb 20, 2014 at 05:36:02PM +0100, Markus Pargmann wrote:
>> Hi,
>>
>> These two patches replace all ops->enable/disable by
>> _regulator_do_disable/enable function calls. These wrappers also handle gpio
>> regulators.
>
> Applied both, thanks.
With these two patches applied I get the following error on
mx6qsabresd running today's linux-next:
vdd1p1: failed to enable
anatop_regulator regulator-1p1.2: failed to register vdd1p1
anatop_regulator: probe of regulator-1p1.2 failed with error -22
vdd3p0: failed to enable
anatop_regulator regulator-3p0.3: failed to register vdd3p0
anatop_regulator: probe of regulator-3p0.3 failed with error -22
vdd2p5: failed to enable
anatop_regulator regulator-2p5.4: failed to register vdd2p5
anatop_regulator: probe of regulator-2p5.4 failed with error -22
vddarm: 725 <--> 1450 mV at 1100 mV
vddpu: 725 <--> 1450 mV at 1100 mV
vddsoc: 725 <--> 1450 mV at 1175 mV
....
pfuze100-regulator 1-0008: Full layer: 1, Metal layer: 0
pfuze100-regulator 1-0008: FAB: 0, FIN: 0
SW1AB: failed to enable
pfuze100-regulator 1-0008: register regulatorSW1AB failed
pfuze100-regulator: probe of 1-0008 failed with error -22
Reverting these two patches the regulators probe successfully.
Any ideas?
Regards,
Fabio Estevam
^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: [PATCH v3 0/2] regulator: core: Fix ops->enable/disable usage
2014-02-24 17:23 ` Fabio Estevam
@ 2014-02-24 20:50 ` Markus Pargmann
-1 siblings, 0 replies; 16+ messages in thread
From: Markus Pargmann @ 2014-02-24 20:50 UTC (permalink / raw)
To: Fabio Estevam
Cc: Mark Brown, Sascha Hauer, Liam Girdwood, linux-arm-kernel, linux-kernel
[-- Attachment #1: Type: text/plain, Size: 2693 bytes --]
Hi Fabio,
On Mon, Feb 24, 2014 at 02:23:50PM -0300, Fabio Estevam wrote:
> On Sun, Feb 23, 2014 at 2:12 AM, Mark Brown <broonie@kernel.org> wrote:
> > On Thu, Feb 20, 2014 at 05:36:02PM +0100, Markus Pargmann wrote:
> >> Hi,
> >>
> >> These two patches replace all ops->enable/disable by
> >> _regulator_do_disable/enable function calls. These wrappers also handle gpio
> >> regulators.
> >
> > Applied both, thanks.
>
> With these two patches applied I get the following error on
> mx6qsabresd running today's linux-next:
>
> vdd1p1: failed to enable
> anatop_regulator regulator-1p1.2: failed to register vdd1p1
> anatop_regulator: probe of regulator-1p1.2 failed with error -22
> vdd3p0: failed to enable
> anatop_regulator regulator-3p0.3: failed to register vdd3p0
> anatop_regulator: probe of regulator-3p0.3 failed with error -22
> vdd2p5: failed to enable
> anatop_regulator regulator-2p5.4: failed to register vdd2p5
> anatop_regulator: probe of regulator-2p5.4 failed with error -22
> vddarm: 725 <--> 1450 mV at 1100 mV
> vddpu: 725 <--> 1450 mV at 1100 mV
> vddsoc: 725 <--> 1450 mV at 1175 mV
> ....
>
> pfuze100-regulator 1-0008: Full layer: 1, Metal layer: 0
> pfuze100-regulator 1-0008: FAB: 0, FIN: 0
> SW1AB: failed to enable
> pfuze100-regulator 1-0008: register regulatorSW1AB failed
> pfuze100-regulator: probe of 1-0008 failed with error -22
>
>
> Reverting these two patches the regulators probe successfully.
>
> Any ideas?
Thanks, I just searched for the reason and found it. My patches do not
handle dummy regulators correctly:
_regulator_do_enable() line 1764:
if (rdev->ena_pin) {
ret = regulator_ena_gpio_ctrl(rdev, true);
if (ret < 0)
return ret;
rdev->ena_gpio_state = 1;
} else if (rdev->desc->ops->enable) {
ret = rdev->desc->ops->enable(rdev);
if (ret < 0)
return ret;
} else {
return -EINVAL;
}
The only situation where this returns -EINVAL is a dummy regulator that
is not always_on. As it doesn't make sense to have a dummy regulator
that is not always_on, I will add a check for exactly this situation to
the regulator_register function and drop the "return -EINVAL" above.
Regards,
Markus
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
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^ permalink raw reply [flat|nested] 16+ messages in thread
* [PATCH v3 0/2] regulator: core: Fix ops->enable/disable usage
@ 2014-02-24 20:50 ` Markus Pargmann
0 siblings, 0 replies; 16+ messages in thread
From: Markus Pargmann @ 2014-02-24 20:50 UTC (permalink / raw)
To: linux-arm-kernel
Hi Fabio,
On Mon, Feb 24, 2014 at 02:23:50PM -0300, Fabio Estevam wrote:
> On Sun, Feb 23, 2014 at 2:12 AM, Mark Brown <broonie@kernel.org> wrote:
> > On Thu, Feb 20, 2014 at 05:36:02PM +0100, Markus Pargmann wrote:
> >> Hi,
> >>
> >> These two patches replace all ops->enable/disable by
> >> _regulator_do_disable/enable function calls. These wrappers also handle gpio
> >> regulators.
> >
> > Applied both, thanks.
>
> With these two patches applied I get the following error on
> mx6qsabresd running today's linux-next:
>
> vdd1p1: failed to enable
> anatop_regulator regulator-1p1.2: failed to register vdd1p1
> anatop_regulator: probe of regulator-1p1.2 failed with error -22
> vdd3p0: failed to enable
> anatop_regulator regulator-3p0.3: failed to register vdd3p0
> anatop_regulator: probe of regulator-3p0.3 failed with error -22
> vdd2p5: failed to enable
> anatop_regulator regulator-2p5.4: failed to register vdd2p5
> anatop_regulator: probe of regulator-2p5.4 failed with error -22
> vddarm: 725 <--> 1450 mV at 1100 mV
> vddpu: 725 <--> 1450 mV at 1100 mV
> vddsoc: 725 <--> 1450 mV at 1175 mV
> ....
>
> pfuze100-regulator 1-0008: Full layer: 1, Metal layer: 0
> pfuze100-regulator 1-0008: FAB: 0, FIN: 0
> SW1AB: failed to enable
> pfuze100-regulator 1-0008: register regulatorSW1AB failed
> pfuze100-regulator: probe of 1-0008 failed with error -22
>
>
> Reverting these two patches the regulators probe successfully.
>
> Any ideas?
Thanks, I just searched for the reason and found it. My patches do not
handle dummy regulators correctly:
_regulator_do_enable() line 1764:
if (rdev->ena_pin) {
ret = regulator_ena_gpio_ctrl(rdev, true);
if (ret < 0)
return ret;
rdev->ena_gpio_state = 1;
} else if (rdev->desc->ops->enable) {
ret = rdev->desc->ops->enable(rdev);
if (ret < 0)
return ret;
} else {
return -EINVAL;
}
The only situation where this returns -EINVAL is a dummy regulator that
is not always_on. As it doesn't make sense to have a dummy regulator
that is not always_on, I will add a check for exactly this situation to
the regulator_register function and drop the "return -EINVAL" above.
Regards,
Markus
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: [PATCH v3 0/2] regulator: core: Fix ops->enable/disable usage
2014-02-24 20:50 ` Markus Pargmann
@ 2014-02-25 1:34 ` Mark Brown
-1 siblings, 0 replies; 16+ messages in thread
From: Mark Brown @ 2014-02-25 1:34 UTC (permalink / raw)
To: Markus Pargmann
Cc: Fabio Estevam, Sascha Hauer, Liam Girdwood, linux-arm-kernel,
linux-kernel
[-- Attachment #1: Type: text/plain, Size: 1290 bytes --]
On Mon, Feb 24, 2014 at 09:50:58PM +0100, Markus Pargmann wrote:
> The only situation where this returns -EINVAL is a dummy regulator that
> is not always_on. As it doesn't make sense to have a dummy regulator
> that is not always_on, I will add a check for exactly this situation to
> the regulator_register function and drop the "return -EINVAL" above.
I've squashed the following fix in today:
From 937635aa9c667b90b76505de91c5693da6a5c120 Mon Sep 17 00:00:00 2001
From: Mark Brown <broonie@linaro.org>
Date: Tue, 25 Feb 2014 10:24:55 +0900
Subject: [PATCH] regulator: Handle invalid enable operation for always/boot on
regulators
Signed-off-by: Mark Brown <broonie@linaro.org>
---
drivers/regulator/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 8cbc7d7..9a09f3c 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1017,7 +1017,7 @@ static int set_machine_constraints(struct regulator_dev *rdev,
*/
if (rdev->constraints->always_on || rdev->constraints->boot_on) {
ret = _regulator_do_enable(rdev);
- if (ret < 0) {
+ if (ret < 0 && ret != -EINVAL) {
rdev_err(rdev, "failed to enable\n");
goto out;
}
--
1.9.0.rc3
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^ permalink raw reply related [flat|nested] 16+ messages in thread
* [PATCH v3 0/2] regulator: core: Fix ops->enable/disable usage
@ 2014-02-25 1:34 ` Mark Brown
0 siblings, 0 replies; 16+ messages in thread
From: Mark Brown @ 2014-02-25 1:34 UTC (permalink / raw)
To: linux-arm-kernel
On Mon, Feb 24, 2014 at 09:50:58PM +0100, Markus Pargmann wrote:
> The only situation where this returns -EINVAL is a dummy regulator that
> is not always_on. As it doesn't make sense to have a dummy regulator
> that is not always_on, I will add a check for exactly this situation to
> the regulator_register function and drop the "return -EINVAL" above.
I've squashed the following fix in today:
>From 937635aa9c667b90b76505de91c5693da6a5c120 Mon Sep 17 00:00:00 2001
From: Mark Brown <broonie@linaro.org>
Date: Tue, 25 Feb 2014 10:24:55 +0900
Subject: [PATCH] regulator: Handle invalid enable operation for always/boot on
regulators
Signed-off-by: Mark Brown <broonie@linaro.org>
---
drivers/regulator/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 8cbc7d7..9a09f3c 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1017,7 +1017,7 @@ static int set_machine_constraints(struct regulator_dev *rdev,
*/
if (rdev->constraints->always_on || rdev->constraints->boot_on) {
ret = _regulator_do_enable(rdev);
- if (ret < 0) {
+ if (ret < 0 && ret != -EINVAL) {
rdev_err(rdev, "failed to enable\n");
goto out;
}
--
1.9.0.rc3
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^ permalink raw reply related [flat|nested] 16+ messages in thread
* Re: [PATCH v3 0/2] regulator: core: Fix ops->enable/disable usage
2014-02-25 1:34 ` Mark Brown
@ 2014-02-25 2:18 ` Fabio Estevam
-1 siblings, 0 replies; 16+ messages in thread
From: Fabio Estevam @ 2014-02-25 2:18 UTC (permalink / raw)
To: Mark Brown
Cc: Markus Pargmann, Sascha Hauer, Liam Girdwood, linux-arm-kernel,
linux-kernel
On Mon, Feb 24, 2014 at 10:34 PM, Mark Brown <broonie@kernel.org> wrote:
> On Mon, Feb 24, 2014 at 09:50:58PM +0100, Markus Pargmann wrote:
>
>> The only situation where this returns -EINVAL is a dummy regulator that
>> is not always_on. As it doesn't make sense to have a dummy regulator
>> that is not always_on, I will add a check for exactly this situation to
>> the regulator_register function and drop the "return -EINVAL" above.
>
> I've squashed the following fix in today:
Thanks. This fixes the issue.
^ permalink raw reply [flat|nested] 16+ messages in thread
* [PATCH v3 0/2] regulator: core: Fix ops->enable/disable usage
@ 2014-02-25 2:18 ` Fabio Estevam
0 siblings, 0 replies; 16+ messages in thread
From: Fabio Estevam @ 2014-02-25 2:18 UTC (permalink / raw)
To: linux-arm-kernel
On Mon, Feb 24, 2014 at 10:34 PM, Mark Brown <broonie@kernel.org> wrote:
> On Mon, Feb 24, 2014 at 09:50:58PM +0100, Markus Pargmann wrote:
>
>> The only situation where this returns -EINVAL is a dummy regulator that
>> is not always_on. As it doesn't make sense to have a dummy regulator
>> that is not always_on, I will add a check for exactly this situation to
>> the regulator_register function and drop the "return -EINVAL" above.
>
> I've squashed the following fix in today:
Thanks. This fixes the issue.
^ permalink raw reply [flat|nested] 16+ messages in thread
end of thread, other threads:[~2014-02-25 2:18 UTC | newest]
Thread overview: 16+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2014-02-20 16:36 [PATCH v3 0/2] regulator: core: Fix ops->enable/disable usage Markus Pargmann
2014-02-20 16:36 ` Markus Pargmann
2014-02-20 16:36 ` [PATCH v3 1/2] regulator: core: Replace direct ops->enable usage Markus Pargmann
2014-02-20 16:36 ` Markus Pargmann
2014-02-20 16:36 ` [PATCH v3 2/2] regulator: core: Replace direct ops->disable usage Markus Pargmann
2014-02-20 16:36 ` Markus Pargmann
2014-02-23 5:12 ` [PATCH v3 0/2] regulator: core: Fix ops->enable/disable usage Mark Brown
2014-02-23 5:12 ` Mark Brown
2014-02-24 17:23 ` Fabio Estevam
2014-02-24 17:23 ` Fabio Estevam
2014-02-24 20:50 ` Markus Pargmann
2014-02-24 20:50 ` Markus Pargmann
2014-02-25 1:34 ` Mark Brown
2014-02-25 1:34 ` Mark Brown
2014-02-25 2:18 ` Fabio Estevam
2014-02-25 2:18 ` Fabio Estevam
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