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13 Jul 2021 09:30:01 -0700 X-IronPort-AV: E=Sophos;i="5.84,236,1620716400"; d="scan'208";a="493102007" Received: from bartel-mobl1.amr.corp.intel.com ([10.254.200.47]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Jul 2021 09:29:58 -0700 Message-ID: <34d1bedc0a1bc8d1116e2bab4482133e6dfd67ba.camel@linux.intel.com> Subject: Re: [PATCH] iio: hid-sensors: bind IIO channels alloc to device object From: Srinivas Pandruvada To: Alexandru Ardelean , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Cc: jic23@kernel.org, jikos@kernel.org Date: Tue, 13 Jul 2021 09:29:55 -0700 In-Reply-To: <20210630123029.759609-1-aardelean@deviqon.com> References: <20210630123029.759609-1-aardelean@deviqon.com> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.38.1-1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2021-06-30 at 15:30 +0300, Alexandru Ardelean wrote: > Some HID drivers use devm_kmemdup() already to clone the template IIO > channels information and update it. > However, there are still some drivers that kmemdup() and kfree() the > channels. > > This change converts them to use devm_kmemdup() and bind the life- > time of > this allocated object to the parent device object (in these drivers). > > Signed-off-by: Alexandru Ardelean Acked-by: Srinivas Pandruvada > --- >  drivers/iio/accel/hid-sensor-accel-3d.c      | 10 ++++------ >  drivers/iio/gyro/hid-sensor-gyro-3d.c        | 11 ++++------- >  drivers/iio/light/hid-sensor-als.c           | 11 ++++------- >  drivers/iio/light/hid-sensor-prox.c          | 11 ++++------- >  drivers/iio/orientation/hid-sensor-incl-3d.c | 11 ++++------- >  drivers/iio/pressure/hid-sensor-press.c      | 11 ++++------- >  6 files changed, 24 insertions(+), 41 deletions(-) > > diff --git a/drivers/iio/accel/hid-sensor-accel-3d.c > b/drivers/iio/accel/hid-sensor-accel-3d.c > index 55cdca818b3b..a2def6f9380a 100644 > --- a/drivers/iio/accel/hid-sensor-accel-3d.c > +++ b/drivers/iio/accel/hid-sensor-accel-3d.c > @@ -367,7 +367,8 @@ static int hid_accel_3d_probe(struct > platform_device *pdev) >                 dev_err(&pdev->dev, "failed to setup common > attributes\n"); >                 return ret; >         } > -       indio_dev->channels = kmemdup(channel_spec, channel_size, > GFP_KERNEL); > +       indio_dev->channels = devm_kmemdup(&pdev->dev, channel_spec, > +                                          channel_size, GFP_KERNEL); >   >         if (!indio_dev->channels) { >                 dev_err(&pdev->dev, "failed to duplicate > channels\n"); > @@ -378,7 +379,7 @@ static int hid_accel_3d_probe(struct > platform_device *pdev) >                                 hsdev->usage, accel_state); >         if (ret) { >                 dev_err(&pdev->dev, "failed to setup attributes\n"); > -               goto error_free_dev_mem; > +               return ret; >         } >   >         indio_dev->info = &accel_3d_info; > @@ -391,7 +392,7 @@ static int hid_accel_3d_probe(struct > platform_device *pdev) >                                         &accel_state- > >common_attributes); >         if (ret < 0) { >                 dev_err(&pdev->dev, "trigger setup failed\n"); > -               goto error_free_dev_mem; > +               return ret; >         } >   >         ret = iio_device_register(indio_dev); > @@ -416,8 +417,6 @@ static int hid_accel_3d_probe(struct > platform_device *pdev) >         iio_device_unregister(indio_dev); >  error_remove_trigger: >         hid_sensor_remove_trigger(indio_dev, &accel_state- > >common_attributes); > -error_free_dev_mem: > -       kfree(indio_dev->channels); >         return ret; >  } >   > @@ -431,7 +430,6 @@ static int hid_accel_3d_remove(struct > platform_device *pdev) >         sensor_hub_remove_callback(hsdev, hsdev->usage); >         iio_device_unregister(indio_dev); >         hid_sensor_remove_trigger(indio_dev, &accel_state- > >common_attributes); > -       kfree(indio_dev->channels); >   >         return 0; >  } > diff --git a/drivers/iio/gyro/hid-sensor-gyro-3d.c > b/drivers/iio/gyro/hid-sensor-gyro-3d.c > index bc63c2a34c5e..8f0ad022c7f1 100644 > --- a/drivers/iio/gyro/hid-sensor-gyro-3d.c > +++ b/drivers/iio/gyro/hid-sensor-gyro-3d.c > @@ -303,8 +303,8 @@ static int hid_gyro_3d_probe(struct > platform_device *pdev) >                 return ret; >         } >   > -       indio_dev->channels = kmemdup(gyro_3d_channels, > -                                     sizeof(gyro_3d_channels), > GFP_KERNEL); > +       indio_dev->channels = devm_kmemdup(&pdev->dev, > gyro_3d_channels, > +                                          sizeof(gyro_3d_channels), > GFP_KERNEL); >         if (!indio_dev->channels) { >                 dev_err(&pdev->dev, "failed to duplicate > channels\n"); >                 return -ENOMEM; > @@ -315,7 +315,7 @@ static int hid_gyro_3d_probe(struct > platform_device *pdev) >                                    HID_USAGE_SENSOR_GYRO_3D, > gyro_state); >         if (ret) { >                 dev_err(&pdev->dev, "failed to setup attributes\n"); > -               goto error_free_dev_mem; > +               return ret; >         } >   >         indio_dev->num_channels = ARRAY_SIZE(gyro_3d_channels); > @@ -329,7 +329,7 @@ static int hid_gyro_3d_probe(struct > platform_device *pdev) >                                         &gyro_state- > >common_attributes); >         if (ret < 0) { >                 dev_err(&pdev->dev, "trigger setup failed\n"); > -               goto error_free_dev_mem; > +               return ret; >         } >   >         ret = iio_device_register(indio_dev); > @@ -354,8 +354,6 @@ static int hid_gyro_3d_probe(struct > platform_device *pdev) >         iio_device_unregister(indio_dev); >  error_remove_trigger: >         hid_sensor_remove_trigger(indio_dev, &gyro_state- > >common_attributes); > -error_free_dev_mem: > -       kfree(indio_dev->channels); >         return ret; >  } >   > @@ -369,7 +367,6 @@ static int hid_gyro_3d_remove(struct > platform_device *pdev) >         sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_GYRO_3D); >         iio_device_unregister(indio_dev); >         hid_sensor_remove_trigger(indio_dev, &gyro_state- > >common_attributes); > -       kfree(indio_dev->channels); >   >         return 0; >  } > diff --git a/drivers/iio/light/hid-sensor-als.c > b/drivers/iio/light/hid-sensor-als.c > index 2ff252c75c03..5a1a625d8d16 100644 > --- a/drivers/iio/light/hid-sensor-als.c > +++ b/drivers/iio/light/hid-sensor-als.c > @@ -294,8 +294,8 @@ static int hid_als_probe(struct platform_device > *pdev) >                 return ret; >         } >   > -       indio_dev->channels = kmemdup(als_channels, > -                                     sizeof(als_channels), > GFP_KERNEL); > +       indio_dev->channels = devm_kmemdup(&pdev->dev, als_channels, > +                                          sizeof(als_channels), > GFP_KERNEL); >         if (!indio_dev->channels) { >                 dev_err(&pdev->dev, "failed to duplicate > channels\n"); >                 return -ENOMEM; > @@ -306,7 +306,7 @@ static int hid_als_probe(struct platform_device > *pdev) >                                HID_USAGE_SENSOR_ALS, als_state); >         if (ret) { >                 dev_err(&pdev->dev, "failed to setup attributes\n"); > -               goto error_free_dev_mem; > +               return ret; >         } >   >         indio_dev->num_channels = > @@ -321,7 +321,7 @@ static int hid_als_probe(struct platform_device > *pdev) >                                 &als_state->common_attributes); >         if (ret < 0) { >                 dev_err(&pdev->dev, "trigger setup failed\n"); > -               goto error_free_dev_mem; > +               return ret; >         } >   >         ret = iio_device_register(indio_dev); > @@ -346,8 +346,6 @@ static int hid_als_probe(struct platform_device > *pdev) >         iio_device_unregister(indio_dev); >  error_remove_trigger: >         hid_sensor_remove_trigger(indio_dev, &als_state- > >common_attributes); > -error_free_dev_mem: > -       kfree(indio_dev->channels); >         return ret; >  } >   > @@ -361,7 +359,6 @@ static int hid_als_remove(struct platform_device > *pdev) >         sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_ALS); >         iio_device_unregister(indio_dev); >         hid_sensor_remove_trigger(indio_dev, &als_state- > >common_attributes); > -       kfree(indio_dev->channels); >   >         return 0; >  } > diff --git a/drivers/iio/light/hid-sensor-prox.c > b/drivers/iio/light/hid-sensor-prox.c > index 1621530f5f61..f10fa2abfe72 100644 > --- a/drivers/iio/light/hid-sensor-prox.c > +++ b/drivers/iio/light/hid-sensor-prox.c > @@ -253,8 +253,8 @@ static int hid_prox_probe(struct platform_device > *pdev) >                 return ret; >         } >   > -       indio_dev->channels = kmemdup(prox_channels, > sizeof(prox_channels), > -                                     GFP_KERNEL); > +       indio_dev->channels = devm_kmemdup(&pdev->dev, prox_channels, > +                                          sizeof(prox_channels), > GFP_KERNEL); >         if (!indio_dev->channels) { >                 dev_err(&pdev->dev, "failed to duplicate > channels\n"); >                 return -ENOMEM; > @@ -265,7 +265,7 @@ static int hid_prox_probe(struct platform_device > *pdev) >                                 HID_USAGE_SENSOR_PROX, prox_state); >         if (ret) { >                 dev_err(&pdev->dev, "failed to setup attributes\n"); > -               goto error_free_dev_mem; > +               return ret; >         } >   >         indio_dev->num_channels = ARRAY_SIZE(prox_channels); > @@ -279,7 +279,7 @@ static int hid_prox_probe(struct platform_device > *pdev) >                                 &prox_state->common_attributes); >         if (ret) { >                 dev_err(&pdev->dev, "trigger setup failed\n"); > -               goto error_free_dev_mem; > +               return ret; >         } >   >         ret = iio_device_register(indio_dev); > @@ -304,8 +304,6 @@ static int hid_prox_probe(struct platform_device > *pdev) >         iio_device_unregister(indio_dev); >  error_remove_trigger: >         hid_sensor_remove_trigger(indio_dev, &prox_state- > >common_attributes); > -error_free_dev_mem: > -       kfree(indio_dev->channels); >         return ret; >  } >   > @@ -319,7 +317,6 @@ static int hid_prox_remove(struct platform_device > *pdev) >         sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_PROX); >         iio_device_unregister(indio_dev); >         hid_sensor_remove_trigger(indio_dev, &prox_state- > >common_attributes); > -       kfree(indio_dev->channels); >   >         return 0; >  } > diff --git a/drivers/iio/orientation/hid-sensor-incl-3d.c > b/drivers/iio/orientation/hid-sensor-incl-3d.c > index c0079e2c8807..ba5b581d5b25 100644 > --- a/drivers/iio/orientation/hid-sensor-incl-3d.c > +++ b/drivers/iio/orientation/hid-sensor-incl-3d.c > @@ -326,8 +326,8 @@ static int hid_incl_3d_probe(struct > platform_device *pdev) >                 return ret; >         } >   > -       indio_dev->channels = kmemdup(incl_3d_channels, > -                                     sizeof(incl_3d_channels), > GFP_KERNEL); > +       indio_dev->channels = devm_kmemdup(&pdev->dev, > incl_3d_channels, > +                                          sizeof(incl_3d_channels), > GFP_KERNEL); >         if (!indio_dev->channels) { >                 dev_err(&pdev->dev, "failed to duplicate > channels\n"); >                 return -ENOMEM; > @@ -339,7 +339,7 @@ static int hid_incl_3d_probe(struct > platform_device *pdev) >                                    incl_state); >         if (ret) { >                 dev_err(&pdev->dev, "failed to setup attributes\n"); > -               goto error_free_dev_mem; > +               return ret; >         } >   >         indio_dev->num_channels = ARRAY_SIZE(incl_3d_channels); > @@ -353,7 +353,7 @@ static int hid_incl_3d_probe(struct > platform_device *pdev) >                                         &incl_state- > >common_attributes); >         if (ret) { >                 dev_err(&pdev->dev, "trigger setup failed\n"); > -               goto error_free_dev_mem; > +               return ret; >         } >   >         ret = iio_device_register(indio_dev); > @@ -379,8 +379,6 @@ static int hid_incl_3d_probe(struct > platform_device *pdev) >         iio_device_unregister(indio_dev); >  error_remove_trigger: >         hid_sensor_remove_trigger(indio_dev, &incl_state- > >common_attributes); > -error_free_dev_mem: > -       kfree(indio_dev->channels); >         return ret; >  } >   > @@ -394,7 +392,6 @@ static int hid_incl_3d_remove(struct > platform_device *pdev) >         sensor_hub_remove_callback(hsdev, > HID_USAGE_SENSOR_INCLINOMETER_3D); >         iio_device_unregister(indio_dev); >         hid_sensor_remove_trigger(indio_dev, &incl_state- > >common_attributes); > -       kfree(indio_dev->channels); >   >         return 0; >  } > diff --git a/drivers/iio/pressure/hid-sensor-press.c > b/drivers/iio/pressure/hid-sensor-press.c > index 10c52b8df2ba..dcd593c426b4 100644 > --- a/drivers/iio/pressure/hid-sensor-press.c > +++ b/drivers/iio/pressure/hid-sensor-press.c > @@ -259,8 +259,8 @@ static int hid_press_probe(struct platform_device > *pdev) >                 return ret; >         } >   > -       indio_dev->channels = kmemdup(press_channels, > sizeof(press_channels), > -                                     GFP_KERNEL); > +       indio_dev->channels = devm_kmemdup(&pdev->dev, > press_channels, > +                                          sizeof(press_channels), > GFP_KERNEL); >         if (!indio_dev->channels) { >                 dev_err(&pdev->dev, "failed to duplicate > channels\n"); >                 return -ENOMEM; > @@ -271,7 +271,7 @@ static int hid_press_probe(struct platform_device > *pdev) >                                  HID_USAGE_SENSOR_PRESSURE, > press_state); >         if (ret) { >                 dev_err(&pdev->dev, "failed to setup attributes\n"); > -               goto error_free_dev_mem; > +               return ret; >         } >   >         indio_dev->num_channels = > @@ -286,7 +286,7 @@ static int hid_press_probe(struct platform_device > *pdev) >                                 &press_state->common_attributes); >         if (ret) { >                 dev_err(&pdev->dev, "trigger setup failed\n"); > -               goto error_free_dev_mem; > +               return ret; >         } >   >         ret = iio_device_register(indio_dev); > @@ -311,8 +311,6 @@ static int hid_press_probe(struct platform_device > *pdev) >         iio_device_unregister(indio_dev); >  error_remove_trigger: >         hid_sensor_remove_trigger(indio_dev, &press_state- > >common_attributes); > -error_free_dev_mem: > -       kfree(indio_dev->channels); >         return ret; >  } >   > @@ -326,7 +324,6 @@ static int hid_press_remove(struct > platform_device *pdev) >         sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_PRESSURE); >         iio_device_unregister(indio_dev); >         hid_sensor_remove_trigger(indio_dev, &press_state- > >common_attributes); > -       kfree(indio_dev->channels); >   >         return 0; >  }