Hi,
On Fri, Aug 24, 2012 at 00:32:39, Matthias Kaehlcke wrote:
> Hi,
>
> El Thu, Aug 23, 2012 at 04:20:21PM +0530 Patil, Rachna ha dit:
>
> > This patch adds support for TI's ADC driver.
> > This is a multifunctional device.
> > Analog input lines are provided on which voltage measurements can be
> > carried out.
> > You can have upto 8 input lines.
> >
> > Signed-off-by: Patil, Rachna <rachna@xxxxxx>
> > ---
> >
> > diff --git a/drivers/iio/adc/ti_adc.c b/drivers/iio/adc/ti_adc.c ...
> > +static int __devinit tiadc_probe(struct platform_device *pdev) {
> > + struct iio_dev *idev;
> > + int err;
> > + struct adc_device *adc_dev = NULL;
> > + struct ti_tscadc_dev *tscadc_dev = pdev->dev.platform_data;
> > + struct mfd_tscadc_board *board_data;
> > +
> > + board_data = (struct mfd_tscadc_board *)tscadc_dev->dev->platform_data;
> > + if (!board_data) {
> > + dev_err(tscadc_dev->dev, "Could not find platform data\n");
> > + return -EINVAL;
> > + }
> > +
> > + idev = iio_device_alloc(sizeof(struct adc_device));
> > + if (idev == NULL) {
> > + dev_err(&pdev->dev, "failed to allocate iio device.\n");
> > + err = -ENOMEM;
> > + goto err_ret;
> > + }
> > + adc_dev = iio_priv(idev);
> > +
> > + tscadc_dev->adc = adc_dev;
> > + adc_dev->mfd_tscadc = tscadc_dev;
> > + adc_dev->idev = idev;
> > + adc_dev->adc_channels = board_data->adc_init->adc_channels;
> > +
> > + idev->dev.parent = &pdev->dev;
> > + idev->name = dev_name(&pdev->dev);
> > + idev->modes = INDIO_DIRECT_MODE;
> > + idev->info = &tiadc_info;
> > +
> > + adc_step_config(adc_dev);
> > +
> > + err = tiadc_channel_init(idev, adc_dev);
> > + if (err < 0)
> > + goto err_fail;
> > +
> > + err = iio_device_register(idev);
> > + if (err)
> > + goto err_free_channels;
> > +
> > + dev_info(&pdev->dev, "attached adc driver\n");
> > + platform_set_drvdata(pdev, idev);
> > +
> > + return 0;
> > +
> > +err_free_channels:
> > + tiadc_channel_remove(idev);
> > +err_fail:
> > + iio_device_unregister(idev);
> > + iio_device_free(idev);
> > +err_ret:
> > + platform_set_drvdata(pdev, NULL);
>
> not necessary, the platform device doesn't exist anymore
Ok. I will correct this.
>
> > + iio_device_free(idev);
>
> already done some lines above and could be executed without having allocated the iio device (when iio_device_alloc() fails)
>
> > +static int __devexit tiadc_remove(struct platform_device *pdev) {
> > + struct ti_tscadc_dev *tscadc_dev = pdev->dev.platform_data;
> > + struct adc_device *adc_dev = tscadc_dev->adc;
> > + struct iio_dev *idev = adc_dev->idev;
> > +
> > + iio_device_unregister(idev);
> > + tiadc_channel_remove(idev);
> > +
> > + tscadc_dev->adc = NULL;
> > +
> > + iio_device_free(idev);
> > + platform_set_drvdata(pdev, NULL);
>
> see above
Yes, will correct this as well.
>
> best regards
>
> --
> Matthias Kaehlcke
> Embedded Linux Developer
> Amsterdam
>
> If sharing a thing in no way diminishes it,
> it is not rightly owned if it is not shared
> .''`.
> using free software / Debian GNU/Linux | http://debian.org : :' :
> `. `'`
> gpg --keyserver pgp.mit.edu --recv-keys 47D8E5D4 `-
>
Regards,
Rachna
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