On Tuesday, April 30, 2013 3:10 AM, Guenter Roeck wrote:
> On Mon, Apr 29, 2013 at 06:36:34PM +0900, Jingoo Han wrote:
> > Use devm_*() functions to make cleanup paths simpler.
> >
> > Signed-off-by: Jingoo Han <jg1.han@xxxxxxxxxxx>
> > ---
> > drivers/watchdog/ts72xx_wdt.c | 64 +++++++----------------------------------
> > 1 files changed, 11 insertions(+), 53 deletions(-)
> >
> > diff --git a/drivers/watchdog/ts72xx_wdt.c b/drivers/watchdog/ts72xx_wdt.c
> > index b8a9245..b19ca75 100644
> > --- a/drivers/watchdog/ts72xx_wdt.c
> > +++ b/drivers/watchdog/ts72xx_wdt.c
> > @@ -396,7 +396,7 @@ static int ts72xx_wdt_probe(struct platform_device *pdev)
> > struct resource *r1, *r2;
> > int error = 0;
> >
> > - wdt = kzalloc(sizeof(struct ts72xx_wdt), GFP_KERNEL);
> > + wdt = devm_kzalloc(&pdev->dev, sizeof(struct ts72xx_wdt), GFP_KERNEL);
> > if (!wdt) {
> > dev_err(&pdev->dev, "failed to allocate memory\n");
> > return -ENOMEM;
> > @@ -405,44 +405,22 @@ static int ts72xx_wdt_probe(struct platform_device *pdev)
> > r1 = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > if (!r1) {
> > dev_err(&pdev->dev, "failed to get memory resource\n");
> > - error = -ENODEV;
> > - goto fail;
> > - }
> > -
> > - r1 = request_mem_region(r1->start, resource_size(r1), pdev->name);
> > - if (!r1) {
> > - dev_err(&pdev->dev, "cannot request memory region\n");
> > - error = -EBUSY;
> > - goto fail;
> > + return -ENODEV;
> > }
> >
> > - wdt->control_reg = ioremap(r1->start, resource_size(r1));
> > - if (!wdt->control_reg) {
> > - dev_err(&pdev->dev, "failed to map memory\n");
> > - error = -ENODEV;
> > - goto fail_free_control;
> > - }
> > + wdt->control_reg = devm_ioremap_resource(&pdev->dev, r1);
> > + if (IS_ERR(wdt->control_reg))
> > + return PTR_ERR(wdt->control_reg);
> >
> > r2 = platform_get_resource(pdev, IORESOURCE_MEM, 1);
> > if (!r2) {
> > dev_err(&pdev->dev, "failed to get memory resource\n");
> > - error = -ENODEV;
> > - goto fail_unmap_control;
> > + return -ENODEV;
> > }
> >
> > - r2 = request_mem_region(r2->start, resource_size(r2), pdev->name);
> > - if (!r2) {
> > - dev_err(&pdev->dev, "cannot request memory region\n");
> > - error = -EBUSY;
> > - goto fail_unmap_control;
> > - }
> > -
> > - wdt->feed_reg = ioremap(r2->start, resource_size(r2));
> > - if (!wdt->feed_reg) {
> > - dev_err(&pdev->dev, "failed to map memory\n");
> > - error = -ENODEV;
> > - goto fail_free_feed;
> > - }
> > + wdt->feed_reg = devm_ioremap_resource(&pdev->dev, r2);
> > + if (IS_ERR(wdt->feed_reg))
> > + return PTR_ERR(wdt->feed_reg);
> >
> You have a mix of returns with and without error messages now. Can you make sure
> that this is all consistent ?
As I previously mentioned, there is no need to add an error message.
(http://www.mail-archive.com/linux-kernel@xxxxxxxxxxxxxxx/msg426498.html)
Best regards,
Jingoo Han
>
> Thanks,
> Guenter
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