On Tue, 2016-08-16 at 12:15 +0300, Mika Westerberg wrote:
> On Fri, Aug 12, 2016 at 11:45:30AM -0500, Aaron Durbin wrote:
> >
> > Was anyone able to take a look into a solution for the current
> > problem? Again, please feel free to ask if anyone would like help
> > testing potential solutions.
>
> Below is one proposal for fixing the issue. It is just a prototype and
> I'm not sure if it takes everything needed into account. Would you be
> able to try it out and let us know if it works for you?
Just style comments below.
> --- a/drivers/acpi/acpi_platform.c
> +++ b/drivers/acpi/acpi_platform.c
> @@ -18,6 +18,7 @@
> #include <linux/module.h>
> #include <linux/dma-mapping.h>
> #include <linux/platform_device.h>
> +#include <linux/pci.h>
I would keep trying to arrange them in alphabetical order, i.e. put
before platform_device.h.
>
> #include "internal.h"
>
> @@ -30,6 +31,35 @@ static const struct acpi_device_id
> forbidden_id_list[] = {
> {"", 0},
> };
>
> +static struct resource *acpi_find_parent_resource(struct acpi_device
> *adev,
> + struct resource
> *res)
> +{
> + struct device *parent;
> +
> + parent = acpi_get_first_physical_node(adev->parent);
> + if (!parent)
> + return NULL;
> +
> +#if IS_ENABLED(CONFIG_PCI)
Oh.
> + if (dev_is_pci(parent)) {
Has a stub.
> + struct pci_dev *pdev = to_pci_dev(parent);
Not needed an ugly define.
> +
> + if (!pci_is_bridge(pdev)) {
Ditto.
> + int i;
> +
> + for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
Ditto.
> + struct resource *r = &pdev-
> >resource[i];
> +
> + if (r->start && resource_contains(r,
> res))
> + return r;
> + }
> + }
> + }
> +#endif
> +
> + return NULL;
> +}
> +
--
Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Intel Finland Oy
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