From: Bjorn Helgaas <helgaas@kernel.org>
To: Christoph Hellwig <hch@infradead.org>
Cc: bjorn@helgaas.com, "Kuppuswamy,
Sathyanarayanan" <sathyanarayanan.kuppuswamy@linux.intel.com>,
linux-pci@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>,
"Raj, Ashok" <ashok.raj@intel.com>
Subject: Re: [PATCH v17 06/12] Documentation: PCI: Remove reset_link references
Date: Thu, 19 Mar 2020 17:52:48 -0500 [thread overview]
Message-ID: <20200319225248.GA12599@google.com> (raw)
In-Reply-To: <20200317170654.GA23125@infradead.org>
On Tue, Mar 17, 2020 at 10:06:54AM -0700, Christoph Hellwig wrote:
> On Tue, Mar 17, 2020 at 11:03:36AM -0500, Bjorn Helgaas wrote:
> > On Tue, Mar 17, 2020 at 10:09 AM Christoph Hellwig <hch@infradead.org> wrote:
> > > On Tue, Mar 17, 2020 at 08:05:50AM -0700, Kuppuswamy, Sathyanarayanan wrote:
> > > > > > From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
> > > > >
> > > > > This should be folded into the patch removing the method.
> > > > This is also folded in the mentioned patch.
> > > > https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git/commit/?h=review/edr&id=7a18dc6506f108db3dc40f5cd779bc15270c4183
> > >
> > > I can't find that series anywhere on the list. What did I miss?
> >
> > We've still been discussing other issues (access to AER registers,
> > synchronization between EDR and hotplug, etc) in other parts of this
> > thread. The git branch Sathy pointed to above is my local branch.
> > I'll send it to the list before putting it into -next, but I wanted to
> > make progress on some of these other issues first.
>
> A few nitpicks:
>
> PCI/ERR: Update error status after reset_link():
>
> - there are two "if (state == pci_channel_io_frozen)"
> right after each other now, merging them would make the code a little
> easier to read.
Merged, thanks.
> PCI/DPC: Move DPC data into struct pci_dev:
>
> - dpc_rp_extensions probable should be a "bool : 1"
I actually had not seen "bool : 1" used, but you're right, there are
several. There aren't any in drivers/pci, though, so I'm inclined to
stay consistent with "unsigned int : 1" unless there's an advantage,
and then I'd probably convert all of drivers/pci over.
My rule of thumb has been [1], where Linus suggests "unsigned int
percpu:1", but maybe that should be updated.
> PCI/ERR: Remove service dependency in pcie_do_recovery():
>
> - as mentioned to Kuppuswamy the reset_cb is never NULL, and thus
> a lot of dead code in reset_link can be removed.
Agreed, thanks, I removed that dead code.
> Also reset_link should be merged into pcie_do_recovery. That
> would also enable to call the argument reset_link, which might be
> a bit more descriptive than reset_cb.
I didn't do this because it sounds like it might be a separate patch.
But maybe Sathy can do this in the next round?
> PCI/DPC: Cache DPC capabilities in pci_init_capabilities():
>
> - I think the pci_dpc_init could be cleaned up a bit to:
>
> ...
> pci_read_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_CAP, &cap);
> if (!(cap & PCI_EXP_DPC_CAP_RP_EXT))
> return;
> pdev->dpc_rp_extensions = true;
> pdev->dpc_rp_log_size = (cap & PCI_EXP_DPC_RP_PIO_LOG_SIZE) >> 8;
> ...
Nice, thanks! I made this change, too.
Thanks a lot for reviewing this!
Bjorn
[1] https://lore.kernel.org/linux-arm-kernel/CA+55aFxnePDimkVKVtv3gNmRGcwc8KQ5mHYvUxY8sAQg6yvVYg@mail.gmail.com/
next prev parent reply other threads:[~2020-03-19 22:52 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-04 2:36 [PATCH v17 00/12] Add Error Disconnect Recover (EDR) support sathyanarayanan.kuppuswamy
2020-03-04 2:36 ` [PATCH v17 01/12] PCI/ERR: Update error status after reset_link() sathyanarayanan.kuppuswamy
2020-03-04 2:36 ` [PATCH v17 02/12] PCI/AER: Move pci_cleanup_aer_error_status_regs() declaration to pci.h sathyanarayanan.kuppuswamy
2020-03-04 2:36 ` [PATCH v17 03/12] PCI/ERR: Remove service dependency in pcie_do_recovery() sathyanarayanan.kuppuswamy
2020-03-17 14:40 ` Christoph Hellwig
2020-03-04 2:36 ` [PATCH v17 04/12] PCI: portdrv: remove unnecessary pcie_port_find_service() sathyanarayanan.kuppuswamy
2020-03-04 2:36 ` [PATCH v17 05/12] PCI: portdrv: remove reset_link member from pcie_port_service_driver sathyanarayanan.kuppuswamy
2020-03-17 14:41 ` Christoph Hellwig
2020-03-17 14:55 ` Kuppuswamy, Sathyanarayanan
2020-03-04 2:36 ` [PATCH v17 06/12] Documentation: PCI: Remove reset_link references sathyanarayanan.kuppuswamy
2020-03-17 14:42 ` Christoph Hellwig
2020-03-17 15:05 ` Kuppuswamy, Sathyanarayanan
2020-03-17 15:07 ` Christoph Hellwig
2020-03-17 16:03 ` Bjorn Helgaas
2020-03-17 17:06 ` Christoph Hellwig
2020-03-19 22:52 ` Bjorn Helgaas [this message]
2020-03-04 2:36 ` [PATCH v17 07/12] PCI/ERR: Return status of pcie_do_recovery() sathyanarayanan.kuppuswamy
2020-03-04 2:36 ` [PATCH v17 08/12] PCI/DPC: Cache DPC capabilities in pci_init_capabilities() sathyanarayanan.kuppuswamy
2020-03-04 2:36 ` [PATCH v17 09/12] PCI/AER: Allow clearing Error Status Register in FF mode sathyanarayanan.kuppuswamy
2020-03-06 5:45 ` Kuppuswamy, Sathyanarayanan
2020-03-06 16:04 ` Bjorn Helgaas
2020-03-06 16:11 ` Kuppuswamy, Sathyanarayanan
2020-03-06 16:41 ` Bjorn Helgaas
2020-03-10 2:40 ` Bjorn Helgaas
2020-03-10 4:28 ` Kuppuswamy, Sathyanarayanan
2020-03-10 18:14 ` Austin.Bolen
2020-03-10 19:32 ` Bjorn Helgaas
2020-03-10 20:06 ` Austin.Bolen
2020-03-10 20:41 ` Kuppuswamy Sathyanarayanan
2020-03-10 20:49 ` Austin.Bolen
2020-03-11 14:45 ` Bjorn Helgaas
2020-03-11 15:19 ` Austin.Bolen
2020-03-11 17:12 ` Bjorn Helgaas
2020-03-11 17:27 ` Austin.Bolen
2020-03-11 20:33 ` Bjorn Helgaas
2020-03-11 21:25 ` Kuppuswamy Sathyanarayanan
2020-03-11 21:53 ` Austin.Bolen
2020-03-11 22:11 ` Kuppuswamy Sathyanarayanan
2020-03-11 22:23 ` Bjorn Helgaas
2020-03-11 23:07 ` Kuppuswamy Sathyanarayanan
2020-03-12 19:53 ` Bjorn Helgaas
2020-03-12 21:02 ` Austin.Bolen
2020-03-12 21:29 ` Kuppuswamy Sathyanarayanan
2020-03-12 21:52 ` Bjorn Helgaas
2020-03-12 22:02 ` Kuppuswamy Sathyanarayanan
2020-03-12 22:36 ` Bjorn Helgaas
2020-03-12 21:59 ` Kuppuswamy Sathyanarayanan
2020-03-12 22:32 ` Bjorn Helgaas
2020-03-13 6:22 ` Kuppuswamy, Sathyanarayanan
2020-03-13 19:28 ` Bjorn Helgaas
2020-03-13 20:26 ` Kuppuswamy Sathyanarayanan
2020-03-19 23:03 ` Bjorn Helgaas
2020-03-19 23:20 ` Kuppuswamy, Sathyanarayanan
2020-03-11 22:13 ` Bjorn Helgaas
2020-03-11 22:41 ` Kuppuswamy Sathyanarayanan
2020-03-11 18:12 ` Kuppuswamy Sathyanarayanan
2020-03-11 22:05 ` Bjorn Helgaas
2020-03-04 2:36 ` [PATCH v17 10/12] PCI/DPC: Export DPC error recovery functions sathyanarayanan.kuppuswamy
2020-03-17 14:43 ` Christoph Hellwig
2020-03-04 2:36 ` [PATCH v17 11/12] PCI/DPC: Add Error Disconnect Recover (EDR) support sathyanarayanan.kuppuswamy
2020-03-06 3:47 ` Bjorn Helgaas
2020-03-06 6:32 ` Kuppuswamy, Sathyanarayanan
2020-03-06 21:00 ` Bjorn Helgaas
2020-03-06 22:42 ` Kuppuswamy Sathyanarayanan
2020-03-06 23:23 ` Bjorn Helgaas
2020-03-07 0:19 ` Kuppuswamy Sathyanarayanan
2020-03-04 2:36 ` [PATCH v17 12/12] PCI/ACPI: Enable EDR support sathyanarayanan.kuppuswamy
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