linux-kernel - Re: [PATCH] PCI: Add Ralink RT2800 broken INTx masking quirk

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Message-ID: <4FD047A7.6050602@01019freenet.de>
Date:	Thu, 07 Jun 2012 08:18:15 +0200
From:	Andreas Hartmann <andihartmann@...19freenet.de>
To:	Alex Williamson <alex.williamson@...hat.com>
CC:	bjorn.helgaas@...com, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
	jan.kiszka@...mens.com, andihartmann@...19freenet.de
Subject: Re: [PATCH] PCI: Add Ralink RT2800 broken INTx masking quirk

Hello Alex,

what about a module parameter to achieve this behaviour manually by
the user without recompiling? I fear, there are much more candidates
out there needing this "feature".


Kind regards and thank you,
Andreas


Alex Williamson wrote:
> Passes pci_intx_mask_supported but continues to send interrupts as
> discovered through VFIO-based device assignment.
> 
> http://www.spinics.net/lists/kvm/msg73738.html
> 
> Signed-off-by: Alex Williamson <alex.williamson@...hat.com> ---
> 
> Depends on Jan's base patch for this quirk: 
> http://www.spinics.net/lists/linux-pci/msg15516.html
> 
> drivers/pci/quirks.c |    2 ++ 1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index
> cbb4358..178f494 100644 --- a/drivers/pci/quirks.c +++
> b/drivers/pci/quirks.c @@ -2940,6 +2940,8 @@ static void __devinit
> quirk_broken_intx_masking(struct pci_dev *dev) } 
> DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x0010, 
> quirk_broken_intx_masking); +DECLARE_PCI_FIXUP_FINAL(0x1814,
> 0x0601, /* Ralink RT2800 802.11n PCI */ +
> quirk_broken_intx_masking);
> 
> static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup
> *f, struct pci_fixup *end)
> 

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