From: Christoph Hellwig <hch@infradead.org>
To: Keith Busch <keith.busch@intel.com>
Cc: linux-pci@vger.kernel.org, Bjorn Helgaas <bhelgaas@google.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Lukas Wunner <lukas@wunner.de>, Wei Zhang <wzhang@fb.com>,
Austin Bolen <Austin.Bolen@dell.com>,
Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCHv5 4/5] pci/msix: Skip disabling disconnected devices
Date: Mon, 6 Feb 2017 09:35:55 -0800 [thread overview]
Message-ID: <20170206173555.GE25762@infradead.org> (raw)
In-Reply-To: <1486144555-5526-5-git-send-email-keith.busch@intel.com>
> @@ -317,7 +317,7 @@ void __pci_write_msi_msg(struct msi_desc *entry, struct msi_msg *msg)
> {
> struct pci_dev *dev = msi_desc_to_pci_dev(entry);
>
> - if (dev->current_state != PCI_D0) {
> + if (dev->current_state != PCI_D0 || pci_dev_is_disconnected(dev)) {
It also skips any MSI message writes as far as I cann tell from the
above. Which seems sensible, but should be mentioned in the changelog.
Otherwise looks fine to me:
Reviewed-by: Christoph Hellwig <hch@lst.de>
next prev parent reply other threads:[~2017-02-06 17:35 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-03 17:55 [PATCHv5 0/5] Limiting PCI access Keith Busch
2017-02-03 17:55 ` [PATCHv5 1/5] pci: Export pci device config accessors Keith Busch
2017-02-06 17:30 ` Christoph Hellwig
2017-02-03 17:55 ` [PATCHv5 2/5] pci: Add device disconnected state Keith Busch
2017-02-03 20:53 ` Greg Kroah-Hartman
2017-02-06 17:32 ` Christoph Hellwig
2017-02-06 17:40 ` Greg Kroah-Hartman
2017-02-06 17:48 ` Christoph Hellwig
2017-02-06 17:54 ` Keith Busch
2017-02-06 17:33 ` Christoph Hellwig
2017-02-06 21:11 ` Keith Busch
2017-02-03 17:55 ` [PATCHv5 3/5] pci: No config access for disconnected devices Keith Busch
2017-02-06 17:34 ` Christoph Hellwig
2017-02-03 17:55 ` [PATCHv5 4/5] pci/msix: Skip disabling " Keith Busch
2017-02-06 17:35 ` Christoph Hellwig [this message]
2017-02-03 17:55 ` [PATCHv5 5/5] pci: Quick return for pci_device_is_present Keith Busch
2017-02-06 17:36 ` Christoph Hellwig
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