Re: [PATCH v4 1/4] base/platform: Only insert MEM and IO resources

From: Rob Herring
Date: Wed May 13 2015 - 10:02:59 EST


On Thu, Apr 23, 2015 at 8:58 AM, Ricardo Ribalda Delgado
<ricardo.ribalda@xxxxxxxxx> wrote:
> platform_device_del only checks the type of the resource in order to
> call release_resource.
>
> On the other hand, platform_device_add calls insert_resource for any
> resource that has a parent.
>
> Make both code branches balanced.

Does this actually solve anything? What resources have parents besides
mem or io?

Rob

>
> Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@xxxxxxxxx>
> ---
> drivers/base/platform.c | 10 +++++++---
> 1 file changed, 7 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/base/platform.c b/drivers/base/platform.c
> index ebf034b..6028681 100644
> --- a/drivers/base/platform.c
> +++ b/drivers/base/platform.c
> @@ -341,19 +341,23 @@ int platform_device_add(struct platform_device *pdev)
>
> for (i = 0; i < pdev->num_resources; i++) {
> struct resource *p, *r = &pdev->resource[i];
> + unsigned long type = resource_type(r);
>
> if (r->name == NULL)
> r->name = dev_name(&pdev->dev);
>
> + if (!(type == IORESOURCE_MEM || type == IORESOURCE_IO))
> + continue;
> +
> p = r->parent;
> if (!p) {
> - if (resource_type(r) == IORESOURCE_MEM)
> + if (type == IORESOURCE_MEM)
> p = &iomem_resource;
> - else if (resource_type(r) == IORESOURCE_IO)
> + else if (type == IORESOURCE_IO)
> p = &ioport_resource;
> }
>
> - if (p && insert_resource(p, r)) {
> + if (insert_resource(p, r)) {
> dev_err(&pdev->dev, "failed to claim resource %d\n", i);
> ret = -EBUSY;
> goto failed;
> --
> 2.1.4
>
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