Re: [PATCH v9 02/12] PCI: OF: Parse and map the IRQ when adding the PCI device.

Wei Yang
2014-08-14T14:58:19Z

On Tue, Aug 12, 2014 at 05:25:15PM +0100, Liviu Dudau wrote:
>Enhance the default implementation of pcibios_add_device() to
>parse and map the IRQ of the device if a DT binding is available.
>
>Cc: Bjorn Helgaas <bhelgaas@google.com>
>Cc: Grant Likely <grant.likely@linaro.org>
>Cc: Rob Herring <robh+dt@kernel.org>
>Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
>---
> drivers/pci/pci.c | 3 +++
> 1 file changed, 3 insertions(+)
>
>diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
>index 1c8592b..29d1775 100644
>--- a/drivers/pci/pci.c
>+++ b/drivers/pci/pci.c
>@@ -17,6 +17,7 @@
> #include <linux/spinlock.h>
> #include <linux/string.h>
> #include <linux/log2.h>
>+#include <linux/of_pci.h>
> #include <linux/pci-aspm.h>
> #include <linux/pm_wakeup.h>
> #include <linux/interrupt.h>
>@@ -1453,6 +1454,8 @@ EXPORT_SYMBOL(pcim_pin_device);
> */
> int __weak pcibios_add_device(struct pci_dev *dev)
> {
>+ dev->irq = of_irq_parse_and_map_pci(dev, 0, 0);
>+
> return 0;
> }

Liviu,

For this, my suggestion is to add arch dependent function to setup the irq
line for pci devices. I can't find an obvious reason this won't work on other
archs, but maybe this will hurt some of them?

>
>--
>2.0.4
>
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--
Richard Yang
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