From: Bjorn Helgaas <helgaas@kernel.org>
To: Sathyanarayanan Kuppuswamy <sathyanarayanan.kuppuswamy@linux.intel.com>
Cc: Kai-Heng Feng <kai.heng.feng@canonical.com>,
Rajvi Jingar <rajvi.jingar@linux.intel.com>,
"Rafael J . Wysocki" <rafael@kernel.org>,
Koba Ko <koba.ko@canonical.com>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
"David E . Box" <david.e.box@linux.intel.com>,
linux-pci@vger.kernel.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org, Bjorn Helgaas <bhelgaas@google.com>
Subject: Re: [PATCH v3 02/10] PCI/PTM: Cache PTM Capability offset
Date: Wed, 7 Sep 2022 10:49:46 -0500 [thread overview]
Message-ID: <20220907154946.GA114629@bhelgaas> (raw)
In-Reply-To: <def1ed94-273a-11eb-68c3-b0b681f921ca@linux.intel.com>
On Tue, Sep 06, 2022 at 04:18:23PM -0700, Sathyanarayanan Kuppuswamy wrote:
> On 9/6/22 3:23 PM, Bjorn Helgaas wrote:
> > void pci_disable_ptm(struct pci_dev *dev)
> > {
> > - int ptm;
> > + int ptm = dev->ptm_cap;
>
> I think you don't need to store it. Directly use dev->ptm?
True, no need, but the value is used three times in this function, so
I think the variable reduces clutter overall.
> > void pci_restore_ptm_state(struct pci_dev *dev)
> > {
> > + int ptm = dev->ptm_cap;
>
> It can be u16?
Done, thanks! I see that in ee8b1c478a9f ("PCI: Return u16 from
pci_find_ext_capability() and similar"), I forgot to change the inline
stub from int to u16. I'll add a patch to do that. Probably not a
prerequisite, since the stub is for !CONFIG_PCI and this code won't
be compiled at all in that case.
> > void pci_ptm_init(struct pci_dev *dev)
> > {
> > - int pos;
> > + int ptm;
>
> Why rename? Also ptm can be u16
"ptm" conveys more information than "pos" and I think it's worth using
the same name for all the functions.
Thank you!
Bjorn
next prev parent reply other threads:[~2022-09-07 15:50 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-06 22:23 [PATCH v3 00/10] PCI/PM: Always disable PTM for all devices during suspend Bjorn Helgaas
2022-09-06 22:23 ` [PATCH v3 01/10] PCI/PTM: Preserve PTM Root Select Bjorn Helgaas
2022-09-06 22:23 ` [PATCH v3 02/10] PCI/PTM: Cache PTM Capability offset Bjorn Helgaas
2022-09-06 23:18 ` Sathyanarayanan Kuppuswamy
2022-09-07 15:49 ` Bjorn Helgaas [this message]
2022-09-06 22:23 ` [PATCH v3 03/10] PCI/PTM: Add pci_upstream_ptm() helper Bjorn Helgaas
2022-09-06 22:23 ` [PATCH v3 04/10] PCI/PTM: Separate configuration and enable Bjorn Helgaas
2022-09-07 5:25 ` Mika Westerberg
2022-09-06 22:23 ` [PATCH v3 05/10] PCI/PTM: Add pci_disable_ptm() wrapper Bjorn Helgaas
2022-09-07 5:28 ` Mika Westerberg
2022-09-07 21:12 ` Bjorn Helgaas
2022-09-06 22:23 ` [PATCH v3 06/10] PCI/PTM: Add pci_enable_ptm() wrapper Bjorn Helgaas
2022-09-07 5:29 ` Mika Westerberg
2022-09-08 20:18 ` Sathyanarayanan Kuppuswamy
2022-09-06 22:23 ` [PATCH v3 07/10] PCI/PTM: Add suspend/resume Bjorn Helgaas
2022-09-07 5:30 ` Mika Westerberg
2022-09-07 16:44 ` Bjorn Helgaas
2022-09-06 22:23 ` [PATCH v3 08/10] PCI/PTM: Move pci_ptm_info() body into its only caller Bjorn Helgaas
2022-09-06 22:23 ` [PATCH v3 09/10] PCI/PTM: Reorder functions in logical order Bjorn Helgaas
2022-09-08 20:15 ` Sathyanarayanan Kuppuswamy
2022-09-08 20:58 ` Bjorn Helgaas
2022-09-06 22:23 ` [PATCH v3 10/10] PCI/PM: Always disable PTM for all devices during suspend Bjorn Helgaas
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