* [PATCH v4 2/4] iio: tsl2772: Use devm_add_action_or_reset for tsl2772_chip_off
@ 2019-08-01 7:36 Chuhong Yuan
2019-08-01 9:35 ` Brian Masney
0 siblings, 1 reply; 3+ messages in thread
From: Chuhong Yuan @ 2019-08-01 7:36 UTC (permalink / raw)
Cc: Jonathan Cameron, Hartmut Knaack, Lars-Peter Clausen,
Peter Meerwald-Stadler, Brian Masney, linux-iio, linux-kernel,
Chuhong Yuan
Use devm_add_action_or_reset to call tsl2772_chip_off
when the device is removed.
This also fixes the issue that the chip is turned off
before the device is unregistered.
Fixes: 4e24c1719f34 ("staging: iio: tsl2x7x: rename driver to tsl2772")
Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
---
Changes in v4:
- Split v3 into three patches.
- Revise description to make it more precise.
drivers/iio/light/tsl2772.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers/iio/light/tsl2772.c b/drivers/iio/light/tsl2772.c
index 29cfd8ae2700..e866ae40f157 100644
--- a/drivers/iio/light/tsl2772.c
+++ b/drivers/iio/light/tsl2772.c
@@ -860,6 +860,13 @@ static int tsl2772_chip_off(struct iio_dev *indio_dev)
return tsl2772_write_control_reg(chip, 0x00);
}
+static void tsl2772_chip_off_action(void *data)
+{
+ struct iio_dev *indio_dev = data;
+
+ tsl2772_chip_off(indio_dev);
+}
+
/**
* tsl2772_invoke_change - power cycle the device to implement the user
* parameters
@@ -1877,9 +1884,14 @@ static int tsl2772_probe(struct i2c_client *clientp,
if (ret < 0)
return ret;
+ ret = devm_add_action_or_reset(&clientp->dev,
+ tsl2772_chip_off_action,
+ indio_dev);
+ if (ret < 0)
+ return ret;
+
ret = iio_device_register(indio_dev);
if (ret) {
- tsl2772_chip_off(indio_dev);
dev_err(&clientp->dev,
"%s: iio registration failed\n", __func__);
return ret;
@@ -1926,8 +1938,6 @@ static int tsl2772_remove(struct i2c_client *client)
{
struct iio_dev *indio_dev = i2c_get_clientdata(client);
- tsl2772_chip_off(indio_dev);
-
iio_device_unregister(indio_dev);
return 0;
--
2.20.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH v4 2/4] iio: tsl2772: Use devm_add_action_or_reset for tsl2772_chip_off
2019-08-01 7:36 [PATCH v4 2/4] iio: tsl2772: Use devm_add_action_or_reset for tsl2772_chip_off Chuhong Yuan
@ 2019-08-01 9:35 ` Brian Masney
2019-08-05 15:29 ` Jonathan Cameron
0 siblings, 1 reply; 3+ messages in thread
From: Brian Masney @ 2019-08-01 9:35 UTC (permalink / raw)
To: Chuhong Yuan
Cc: Jonathan Cameron, Hartmut Knaack, Lars-Peter Clausen,
Peter Meerwald-Stadler, linux-iio, linux-kernel
On Thu, Aug 01, 2019 at 03:36:05PM +0800, Chuhong Yuan wrote:
> Use devm_add_action_or_reset to call tsl2772_chip_off
> when the device is removed.
> This also fixes the issue that the chip is turned off
> before the device is unregistered.
>
> Fixes: 4e24c1719f34 ("staging: iio: tsl2x7x: rename driver to tsl2772")
> Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Let's use this Fixes tag instead:
Fixes: c06c4d793584 ("staging: iio: tsl2x7x/tsl2772: move out of staging")
I'd wait and see if Jonathan wants you to resend out the series if he
has any changes.
Brian
> ---
> Changes in v4:
> - Split v3 into three patches.
> - Revise description to make it more precise.
>
> drivers/iio/light/tsl2772.c | 16 +++++++++++++---
> 1 file changed, 13 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/iio/light/tsl2772.c b/drivers/iio/light/tsl2772.c
> index 29cfd8ae2700..e866ae40f157 100644
> --- a/drivers/iio/light/tsl2772.c
> +++ b/drivers/iio/light/tsl2772.c
> @@ -860,6 +860,13 @@ static int tsl2772_chip_off(struct iio_dev *indio_dev)
> return tsl2772_write_control_reg(chip, 0x00);
> }
>
> +static void tsl2772_chip_off_action(void *data)
> +{
> + struct iio_dev *indio_dev = data;
> +
> + tsl2772_chip_off(indio_dev);
> +}
> +
> /**
> * tsl2772_invoke_change - power cycle the device to implement the user
> * parameters
> @@ -1877,9 +1884,14 @@ static int tsl2772_probe(struct i2c_client *clientp,
> if (ret < 0)
> return ret;
>
> + ret = devm_add_action_or_reset(&clientp->dev,
> + tsl2772_chip_off_action,
> + indio_dev);
> + if (ret < 0)
> + return ret;
> +
> ret = iio_device_register(indio_dev);
> if (ret) {
> - tsl2772_chip_off(indio_dev);
> dev_err(&clientp->dev,
> "%s: iio registration failed\n", __func__);
> return ret;
> @@ -1926,8 +1938,6 @@ static int tsl2772_remove(struct i2c_client *client)
> {
> struct iio_dev *indio_dev = i2c_get_clientdata(client);
>
> - tsl2772_chip_off(indio_dev);
> -
> iio_device_unregister(indio_dev);
>
> return 0;
> --
> 2.20.1
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH v4 2/4] iio: tsl2772: Use devm_add_action_or_reset for tsl2772_chip_off
2019-08-01 9:35 ` Brian Masney
@ 2019-08-05 15:29 ` Jonathan Cameron
0 siblings, 0 replies; 3+ messages in thread
From: Jonathan Cameron @ 2019-08-05 15:29 UTC (permalink / raw)
To: Brian Masney
Cc: Chuhong Yuan, Hartmut Knaack, Lars-Peter Clausen,
Peter Meerwald-Stadler, linux-iio, linux-kernel
On Thu, 1 Aug 2019 05:35:26 -0400
Brian Masney <masneyb@onstation.org> wrote:
> On Thu, Aug 01, 2019 at 03:36:05PM +0800, Chuhong Yuan wrote:
> > Use devm_add_action_or_reset to call tsl2772_chip_off
> > when the device is removed.
> > This also fixes the issue that the chip is turned off
> > before the device is unregistered.
> >
> > Fixes: 4e24c1719f34 ("staging: iio: tsl2x7x: rename driver to tsl2772")
> > Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
>
> Let's use this Fixes tag instead:
>
> Fixes: c06c4d793584 ("staging: iio: tsl2x7x/tsl2772: move out of staging")
>
> I'd wait and see if Jonathan wants you to resend out the series if he
> has any changes.
I've added a note to say this will probably need a backport for stable.
Actually in that case we should be looking for a more minimal solution than
this anyway.
Applied to the togreg branch of iio.git and pushed out as testing for
the autobuilders to play with it.
Thanks,
Jonathan
>
> Brian
>
>
> > ---
> > Changes in v4:
> > - Split v3 into three patches.
> > - Revise description to make it more precise.
> >
> > drivers/iio/light/tsl2772.c | 16 +++++++++++++---
> > 1 file changed, 13 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/iio/light/tsl2772.c b/drivers/iio/light/tsl2772.c
> > index 29cfd8ae2700..e866ae40f157 100644
> > --- a/drivers/iio/light/tsl2772.c
> > +++ b/drivers/iio/light/tsl2772.c
> > @@ -860,6 +860,13 @@ static int tsl2772_chip_off(struct iio_dev *indio_dev)
> > return tsl2772_write_control_reg(chip, 0x00);
> > }
> >
> > +static void tsl2772_chip_off_action(void *data)
> > +{
> > + struct iio_dev *indio_dev = data;
> > +
> > + tsl2772_chip_off(indio_dev);
> > +}
> > +
> > /**
> > * tsl2772_invoke_change - power cycle the device to implement the user
> > * parameters
> > @@ -1877,9 +1884,14 @@ static int tsl2772_probe(struct i2c_client *clientp,
> > if (ret < 0)
> > return ret;
> >
> > + ret = devm_add_action_or_reset(&clientp->dev,
> > + tsl2772_chip_off_action,
> > + indio_dev);
> > + if (ret < 0)
> > + return ret;
> > +
> > ret = iio_device_register(indio_dev);
> > if (ret) {
> > - tsl2772_chip_off(indio_dev);
> > dev_err(&clientp->dev,
> > "%s: iio registration failed\n", __func__);
> > return ret;
> > @@ -1926,8 +1938,6 @@ static int tsl2772_remove(struct i2c_client *client)
> > {
> > struct iio_dev *indio_dev = i2c_get_clientdata(client);
> >
> > - tsl2772_chip_off(indio_dev);
> > -
> > iio_device_unregister(indio_dev);
> >
> > return 0;
> > --
> > 2.20.1
^ permalink raw reply [flat|nested] 3+ messages in thread
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2019-08-01 7:36 [PATCH v4 2/4] iio: tsl2772: Use devm_add_action_or_reset for tsl2772_chip_off Chuhong Yuan
2019-08-01 9:35 ` Brian Masney
2019-08-05 15:29 ` Jonathan Cameron
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