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SubjectRe: [PATCH v1] driver core: platform: Propagate error from insert_resource()
On Tue, Apr 02, 2019 at 06:02:40PM +0200, Rafael J. Wysocki wrote:
> On Tue, Apr 2, 2019 at 5:59 PM Andy Shevchenko
> <andriy.shevchenko@linux.intel.com> wrote:
> >
> > Since insert_resource() might return an error we don't need
> > to shadow its error code and would safely propagate to the user.

> > - if (p && insert_resource(p, r)) {
> > + if (p && (ret = insert_resource(p, r))) {
>
> I would put the assignment here.
>
> > dev_err(&pdev->dev, "failed to claim resource %d: %pR\n", i, r);
> > - ret = -EBUSY;
> > goto failed;
> > }

Something like this?

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index dab0a5abc391..9cf9e2af9efd 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -438,10 +438,12 @@ int platform_device_add(struct platform_device *pdev)
p = &ioport_resource;
}

- if (p && insert_resource(p, r)) {
- dev_err(&pdev->dev, "failed to claim resource %d: %pR\n", i, r);
- ret = -EBUSY;
- goto failed;
+ if (p) {
+ ret = insert_resource(p, r);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to claim resource %d: %pR\n", i, r);
+ goto failed;
+ }
}
}

--
With Best Regards,
Andy Shevchenko


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