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Message-ID: <20230829200229.GA804314@bhelgaas>
Date: Tue, 29 Aug 2023 15:02:29 -0500
From: Bjorn Helgaas <helgaas@...nel.org>
To: Valentin Sinitsyn <valesini@...dex-team.ru>
Cc: kernel test robot <lkp@...el.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Tejun Heo <tj@...nel.org>, oe-kbuild-all@...ts.linux.dev,
Daniel Vetter <daniel.vetter@...ll.ch>,
Dan Williams <dan.j.williams@...el.com>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 2/2] PCI: Implement custom llseek for sysfs resource
entries
On Mon, Aug 28, 2023 at 12:22:54PM +0500, Valentin Sinitsyn wrote:
> On 25.08.2023 19:10, kernel test robot wrote:
> > Hi Valentine,
> >
> > kernel test robot noticed the following build warnings:
> >
> [..]
> > All warnings (new ones prefixed by >>):
> >
> > drivers/pci/pci-sysfs.c:1268:12: warning: no previous prototype for 'pci_create_resource_files' [-Wmissing-prototypes]
> > 1268 | int __weak pci_create_resource_files(struct pci_dev *dev) { return 0; }
> > | ^~~~~~~~~~~~~~~~~~~~~~~~~
> > drivers/pci/pci-sysfs.c:1269:13: warning: no previous prototype for 'pci_remove_resource_files' [-Wmissing-prototypes]
> > 1269 | void __weak pci_remove_resource_files(struct pci_dev *dev) { return; }
> > | ^~~~~~~~~~~~~~~~~~~~~~~~~
> > > > drivers/pci/pci-sysfs.c:838:15: warning: 'pci_llseek_resource' defined but not used [-Wunused-function]
> > 838 | static loff_t pci_llseek_resource(struct file *filep,
> > | ^~~~~~~~~~~~~~~~~~~
> I'm not sure if I should do anything about it: arc doesn't HAVE_* anything
> PCI-related, and pci-sysfs doesn't seem to be written with this case in
> mind. Guarding pci_llseek_resource() with an #ifdef HAVE_AT_LEAST_SOMETHING
> is trivial, but it feels more like a patch to silence a bot than a proper
> fix.
Looks like it will require some untangling to figure out a nice fix,
but I think you *do* need to do something about it because I don't
want to add build errors on any arch.
Bjorn
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