From: Kumar Gala <kumar.gala@freescale.com>
To: Xu Lei <B33228@freescale.com>
Cc: linux-pci@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] PCI: portdrv: fix irq initialization on FSL pcie host controller
Date: Sat, 7 May 2011 11:21:16 -0500 [thread overview]
Message-ID: <E8D326F6-7E52-4A20-87B3-6C4CC34406C4@freescale.com> (raw)
In-Reply-To: <1303977671.1642.742.camel@xulei-desktop>
On Apr 28, 2011, at 3:01 AM, Xu Lei wrote:
>=20
> Any feedback on this patch? Thanks.
>=20
> On Friday, 2011-04-22 at 15:43 +0800, Lei Xu wrote:
>> Root complex ports for Freescale PCIe host controller only receive
>> interrupts, so if there is no irq setting for RC, it should not =
return
>> error, otherwise it may result the PCIe host controller is disabled.
>>=20
>> Signed-off-by: Lei Xu <B33228@freescale.com>
>> ---
>> drivers/pci/pcie/portdrv_core.c | 5 ++++-
>> 1 files changed, 4 insertions(+), 1 deletions(-)
>>=20
>> diff --git a/drivers/pci/pcie/portdrv_core.c =
b/drivers/pci/pcie/portdrv_core.c
>> index 595654a..95e64c8 100644
>> --- a/drivers/pci/pcie/portdrv_core.c
>> +++ b/drivers/pci/pcie/portdrv_core.c
>> @@ -209,7 +209,10 @@ static int init_service_irqs(struct pci_dev =
*dev, int *irqs, int mask)
>> irqs[i] =3D irq;
>> irqs[PCIE_PORT_SERVICE_VC_SHIFT] =3D -1;
>>=20
>> - if (irq < 0)
>> + /* Root complex ports for Freescale PCIe host controller only
>> + * receive interrupts, so if there is no irq setting for RC,
>> + * it should not return error. */
>> + if ((irq < 0) && (dev->pcie_type !=3D PCI_EXP_TYPE_ROOT_PORT))
>> return -ENODEV;
>> return 0;
>> }
>=20
> --=20
> Regards
>=20
> Lei
>=20
Reviewing this in more detail this is not the right solution. We should =
have an dev->irq set and need to fix that.
The means to accomplish that is by fixing up the device tree to properly =
get the interrupt assigned to the root complex node.
- k=
prev parent reply other threads:[~2011-05-07 16:21 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-22 7:43 [PATCH] PCI: portdrv: fix irq initialization on FSL pcie host controller Lei Xu
2011-04-28 8:01 ` Xu Lei
2011-05-07 16:21 ` Kumar Gala [this message]
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