linux-kernel - Re: [PATCH v1 1/5] iio: accel: bma400: conversion to device-managed function

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Date:   Tue, 22 Mar 2022 02:50:13 +0530
From:   Jagath Jog J <jagathjog1996@...il.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Dan Robertson <dan@...obertson.com>,
        Jonathan Cameron <jic23@...nel.org>,
        linux-iio <linux-iio@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 1/5] iio: accel: bma400: conversion to device-managed
 function

Hello Andy,

On Mon, Mar 21, 2022 at 10:30:26AM +0200, Andy Shevchenko wrote:
> On Sat, Mar 19, 2022 at 8:10 PM Jagath Jog J <jagathjog1996@...il.com> wrote:
> >
> > This is a conversion to device-managed by using devm_iio_device_register
> > inside probe function, now disabling the regulator and putting bma400 to
> > power down via a devm_add_action_or_reset() hook.
> >
> > The dev_set_drvdata() call, bma400_remove() function and hooks in the I2C
> > and SPI driver struct is removed as devm_iio_device_register function is
> > used to automatically unregister on driver detach.
> 
> ...
> 
> > +static void bma400_disable(void *data_ptr)
> > +{
> > +       struct bma400_data *data = data_ptr;
> > +       int ret;
> 
> > +       ret = bma400_set_power_mode(data, POWER_MODE_SLEEP);
> > +       if (ret)
> > +               dev_warn(data->dev, "Failed to put device into sleep mode (%pe)\n",
> > +                        ERR_PTR(ret));
> 
> By what reason did you remove mutex around this call?
> 
> > +       regulator_bulk_disable(ARRAY_SIZE(data->regulators), data->regulators);
> > +}
Sorry my mistake, I missed this.
I will include the mutex calls in next patch version.
> 
> 
> 
> -- 
> With Best Regards,
> Andy Shevchenko