Hi,
On Fri, Aug 24, 2012 at 00:18:31, Matthias Kaehlcke wrote:
> Hi,
>
> El Thu, Aug 23, 2012 at 04:19:57PM +0530 Patil, Rachna ha dit:
>
> > Add the mfd core driver which supports touchscreen and ADC.
> > With this patch we are only adding infrastructure to support the MFD
> > clients.
> >
> > Signed-off-by: Patil, Rachna <rachna@xxxxxx>
> > ---
> > diff --git a/drivers/mfd/ti_tscadc.c b/drivers/mfd/ti_tscadc.c ...
> > +static int __devinit ti_tscadc_probe(struct platform_device *pdev)
> > +{
> > + struct ti_tscadc_dev *tscadc;
> > + int err, ctrl;
> > + int clk_value, clock_rate;
> > + struct resource *res;
> > + struct clk *clk;
> > +
> > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > + if (!res) {
> > + dev_err(&pdev->dev, "no memory resource defined.\n");
> > + return -EINVAL;
> > + }
> > +
> > + /* Allocate memory for device */
> > + tscadc = kzalloc(sizeof(struct ti_tscadc_dev), GFP_KERNEL);
> > + if (!tscadc) {
> > + dev_err(&pdev->dev, "failed to allocate memory.\n");
> > + return -ENOMEM;
> > + }
> > +
> > + res = request_mem_region(res->start, resource_size(res), pdev->name);
> > + if (!res) {
> > + dev_err(&pdev->dev, "failed to reserve registers.\n");
> > + err = -EBUSY;
> > + goto err_free_mem;
> > + }
> > +
> > + tscadc->tscadc_base = ioremap(res->start, resource_size(res));
> > + if (!tscadc->tscadc_base) {
> > + dev_err(&pdev->dev, "failed to map registers.\n");
> > + err = -ENOMEM;
> > + goto err_release_mem;
> > + }
> > +
> > + tscadc->irq = platform_get_irq(pdev, 0);
> > + if (tscadc->irq < 0) {
> > + dev_err(&pdev->dev, "no irq ID is specified.\n");
> > + return -ENODEV;
>
> goto err_iounmap_mem;
Yes. Will add this.
>
> > ...
> > +err_fail:
> > + pm_runtime_put_sync(&pdev->dev);
> > + pm_runtime_disable(&pdev->dev);
> > + iounmap(tscadc->tscadc_base);
> > +err_release_mem:
> > + release_mem_region(res->start, resource_size(res));
> > + mfd_remove_devices(tscadc->dev);
> > +err_free_mem:
> > + platform_set_drvdata(pdev, NULL);
>
> shouldn't be necessary as the platform device doesn't exist any longer
Ok. Will remove this.
>
> > ...
> > +static int __devexit ti_tscadc_remove(struct platform_device *pdev) {
> > + struct ti_tscadc_dev *tscadc = platform_get_drvdata(pdev);
> > + struct resource *res;
> > +
> > + tscadc_writel(tscadc, REG_SE, 0x00);
> > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > + iounmap(tscadc->tscadc_base);
> > + release_mem_region(res->start, resource_size(res));
> > +
> > + pm_runtime_put_sync(&pdev->dev);
> > + pm_runtime_disable(&pdev->dev);
> > +
> > + mfd_remove_devices(tscadc->dev);
> > + kfree(tscadc);
> > +
> > + platform_set_drvdata(pdev, NULL);
>
> same as above
Will correct this as well.
>
> best regards
>
> --
> Matthias Kaehlcke
> Embedded Linux Developer
> Amsterdam
>
> The only way to do great work is to love what you do
> (Steve Jobs)
> .''`.
> using free software / Debian GNU/Linux | http://debian.org : :' :
> `. `'`
> gpg --keyserver pgp.mit.edu --recv-keys 47D8E5D4 `-
>
Thanks & Regards,
Rachna
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