* [PATCH] iio: pressure: zpa2326: fix iio_triggered_buffer_postenable position
@ 2019-09-20 8:03 Alexandru Ardelean
2019-10-05 15:14 ` Jonathan Cameron
0 siblings, 1 reply; 3+ messages in thread
From: Alexandru Ardelean @ 2019-09-20 8:03 UTC (permalink / raw)
To: linux-iio; +Cc: gregor.boirie, jic23, Alexandru Ardelean
The iio_triggered_buffer_{predisable,postenable} functions attach/detach
the poll functions.
The iio_triggered_buffer_postenable() should be called before (to attach
the poll func) and then the
The iio_triggered_buffer_predisable() function is hooked directly without
anything, which is probably fine, as the postenable() version seems to also
do some reset/wake-up of the device.
This will mean it will be easier when removing it; i.e. it just gets
removed.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
---
drivers/iio/pressure/zpa2326.c | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)
diff --git a/drivers/iio/pressure/zpa2326.c b/drivers/iio/pressure/zpa2326.c
index 9d0d07930236..99dfe33ee402 100644
--- a/drivers/iio/pressure/zpa2326.c
+++ b/drivers/iio/pressure/zpa2326.c
@@ -1243,6 +1243,11 @@ static int zpa2326_postenable_buffer(struct iio_dev *indio_dev)
const struct zpa2326_private *priv = iio_priv(indio_dev);
int err;
+ /* Plug our own trigger event handler. */
+ err = iio_triggered_buffer_postenable(indio_dev);
+ if (err)
+ goto err;
+
if (!priv->waken) {
/*
* We were already power supplied. Just clear hardware FIFO to
@@ -1250,7 +1255,7 @@ static int zpa2326_postenable_buffer(struct iio_dev *indio_dev)
*/
err = zpa2326_clear_fifo(indio_dev, 0);
if (err)
- goto err;
+ goto err_buffer_predisable;
}
if (!iio_trigger_using_own(indio_dev) && priv->waken) {
@@ -1260,16 +1265,13 @@ static int zpa2326_postenable_buffer(struct iio_dev *indio_dev)
*/
err = zpa2326_config_oneshot(indio_dev, priv->irq);
if (err)
- goto err;
+ goto err_buffer_predisable;
}
- /* Plug our own trigger event handler. */
- err = iio_triggered_buffer_postenable(indio_dev);
- if (err)
- goto err;
-
return 0;
+err_buffer_predisable:
+ iio_triggered_buffer_predisable(indio_dev);
err:
zpa2326_err(indio_dev, "failed to enable buffering (%d)", err);
--
2.20.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] iio: pressure: zpa2326: fix iio_triggered_buffer_postenable position
2019-09-20 8:03 [PATCH] iio: pressure: zpa2326: fix iio_triggered_buffer_postenable position Alexandru Ardelean
@ 2019-10-05 15:14 ` Jonathan Cameron
2019-10-22 11:54 ` Jonathan Cameron
0 siblings, 1 reply; 3+ messages in thread
From: Jonathan Cameron @ 2019-10-05 15:14 UTC (permalink / raw)
To: Alexandru Ardelean; +Cc: linux-iio, gregor.boirie
On Fri, 20 Sep 2019 11:03:48 +0300
Alexandru Ardelean <alexandru.ardelean@analog.com> wrote:
> The iio_triggered_buffer_{predisable,postenable} functions attach/detach
> the poll functions.
>
> The iio_triggered_buffer_postenable() should be called before (to attach
> the poll func) and then the
>
> The iio_triggered_buffer_predisable() function is hooked directly without
> anything, which is probably fine, as the postenable() version seems to also
> do some reset/wake-up of the device.
> This will mean it will be easier when removing it; i.e. it just gets
> removed.
>
> Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Seems straight forward but I've often been wrong before.
Not heard from Gregor for a while, but we should give him a little more
time to spot this one. If nothing for another week I'll just take a
gamble and apply it. If I seem to have forgotten any of these give
me a bump.
Thanks,
Jonathan
> ---
> drivers/iio/pressure/zpa2326.c | 16 +++++++++-------
> 1 file changed, 9 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/iio/pressure/zpa2326.c b/drivers/iio/pressure/zpa2326.c
> index 9d0d07930236..99dfe33ee402 100644
> --- a/drivers/iio/pressure/zpa2326.c
> +++ b/drivers/iio/pressure/zpa2326.c
> @@ -1243,6 +1243,11 @@ static int zpa2326_postenable_buffer(struct iio_dev *indio_dev)
> const struct zpa2326_private *priv = iio_priv(indio_dev);
> int err;
>
> + /* Plug our own trigger event handler. */
> + err = iio_triggered_buffer_postenable(indio_dev);
> + if (err)
> + goto err;
> +
> if (!priv->waken) {
> /*
> * We were already power supplied. Just clear hardware FIFO to
> @@ -1250,7 +1255,7 @@ static int zpa2326_postenable_buffer(struct iio_dev *indio_dev)
> */
> err = zpa2326_clear_fifo(indio_dev, 0);
> if (err)
> - goto err;
> + goto err_buffer_predisable;
> }
>
> if (!iio_trigger_using_own(indio_dev) && priv->waken) {
> @@ -1260,16 +1265,13 @@ static int zpa2326_postenable_buffer(struct iio_dev *indio_dev)
> */
> err = zpa2326_config_oneshot(indio_dev, priv->irq);
> if (err)
> - goto err;
> + goto err_buffer_predisable;
> }
>
> - /* Plug our own trigger event handler. */
> - err = iio_triggered_buffer_postenable(indio_dev);
> - if (err)
> - goto err;
> -
> return 0;
>
> +err_buffer_predisable:
> + iio_triggered_buffer_predisable(indio_dev);
> err:
> zpa2326_err(indio_dev, "failed to enable buffering (%d)", err);
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] iio: pressure: zpa2326: fix iio_triggered_buffer_postenable position
2019-10-05 15:14 ` Jonathan Cameron
@ 2019-10-22 11:54 ` Jonathan Cameron
0 siblings, 0 replies; 3+ messages in thread
From: Jonathan Cameron @ 2019-10-22 11:54 UTC (permalink / raw)
To: Alexandru Ardelean; +Cc: linux-iio, gregor.boirie
On Sat, 5 Oct 2019 16:14:20 +0100
Jonathan Cameron <jic23@kernel.org> wrote:
> On Fri, 20 Sep 2019 11:03:48 +0300
> Alexandru Ardelean <alexandru.ardelean@analog.com> wrote:
>
> > The iio_triggered_buffer_{predisable,postenable} functions attach/detach
> > the poll functions.
> >
> > The iio_triggered_buffer_postenable() should be called before (to attach
> > the poll func) and then the
> >
> > The iio_triggered_buffer_predisable() function is hooked directly without
> > anything, which is probably fine, as the postenable() version seems to also
> > do some reset/wake-up of the device.
> > This will mean it will be easier when removing it; i.e. it just gets
> > removed.
> >
> > Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
> Seems straight forward but I've often been wrong before.
> Not heard from Gregor for a while, but we should give him a little more
> time to spot this one. If nothing for another week I'll just take a
> gamble and apply it. If I seem to have forgotten any of these give
> me a bump.
Long enough. Time to gamble :)
Applied to the togreg branch of iio.git and pushed out as testing for
the autobuilders to play with it.
Thanks,
Jonathan
>
> Thanks,
>
> Jonathan
>
> > ---
> > drivers/iio/pressure/zpa2326.c | 16 +++++++++-------
> > 1 file changed, 9 insertions(+), 7 deletions(-)
> >
> > diff --git a/drivers/iio/pressure/zpa2326.c b/drivers/iio/pressure/zpa2326.c
> > index 9d0d07930236..99dfe33ee402 100644
> > --- a/drivers/iio/pressure/zpa2326.c
> > +++ b/drivers/iio/pressure/zpa2326.c
> > @@ -1243,6 +1243,11 @@ static int zpa2326_postenable_buffer(struct iio_dev *indio_dev)
> > const struct zpa2326_private *priv = iio_priv(indio_dev);
> > int err;
> >
> > + /* Plug our own trigger event handler. */
> > + err = iio_triggered_buffer_postenable(indio_dev);
> > + if (err)
> > + goto err;
> > +
> > if (!priv->waken) {
> > /*
> > * We were already power supplied. Just clear hardware FIFO to
> > @@ -1250,7 +1255,7 @@ static int zpa2326_postenable_buffer(struct iio_dev *indio_dev)
> > */
> > err = zpa2326_clear_fifo(indio_dev, 0);
> > if (err)
> > - goto err;
> > + goto err_buffer_predisable;
> > }
> >
> > if (!iio_trigger_using_own(indio_dev) && priv->waken) {
> > @@ -1260,16 +1265,13 @@ static int zpa2326_postenable_buffer(struct iio_dev *indio_dev)
> > */
> > err = zpa2326_config_oneshot(indio_dev, priv->irq);
> > if (err)
> > - goto err;
> > + goto err_buffer_predisable;
> > }
> >
> > - /* Plug our own trigger event handler. */
> > - err = iio_triggered_buffer_postenable(indio_dev);
> > - if (err)
> > - goto err;
> > -
> > return 0;
> >
> > +err_buffer_predisable:
> > + iio_triggered_buffer_predisable(indio_dev);
> > err:
> > zpa2326_err(indio_dev, "failed to enable buffering (%d)", err);
> >
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2019-09-20 8:03 [PATCH] iio: pressure: zpa2326: fix iio_triggered_buffer_postenable position Alexandru Ardelean
2019-10-05 15:14 ` Jonathan Cameron
2019-10-22 11:54 ` Jonathan Cameron
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