2021-04-21 17:42:47

by Arnd Bergmann

[permalink] [raw]
Subject: [PATCH] nvme: fix unused variable warning

From: Arnd Bergmann <[email protected]>

The function was introduced with a variable that is never referenced:

drivers/pci/quirks.c: In function 'quirk_amd_nvme_fixup':
drivers/pci/quirks.c:312:25: warning: unused variable 'rdev' [-Wunused-variable]

Fixes: 9597624ef606 ("nvme: put some AMD PCIE downstream NVME device to simple suspend/resume path")
Signed-off-by: Arnd Bergmann <[email protected]>
---
drivers/pci/quirks.c | 2 --
1 file changed, 2 deletions(-)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 2e24dced699a..c86ede081534 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -309,8 +309,6 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopci

static void quirk_amd_nvme_fixup(struct pci_dev *dev)
{
- struct pci_dev *rdev;
-
dev->dev_flags |= PCI_DEV_FLAGS_AMD_NVME_SIMPLE_SUSPEND;
pci_info(dev, "AMD simple suspend opt enabled\n");

--
2.29.2


2021-04-22 00:59:48

by Krzysztof Wilczyński

[permalink] [raw]
Subject: Re: [PATCH] nvme: fix unused variable warning

[+cc Bixuan]

Hi Arnd,

> The function was introduced with a variable that is never referenced:
>
> drivers/pci/quirks.c: In function 'quirk_amd_nvme_fixup':
> drivers/pci/quirks.c:312:25: warning: unused variable 'rdev' [-Wunused-variable]
>
> Fixes: 9597624ef606 ("nvme: put some AMD PCIE downstream NVME device to simple suspend/resume path")
[...]

A simialr patch was sent recently, as per:

https://lore.kernel.org/linux-pci/[email protected]/

Other than that,

Reviewed-by: Krzysztof Wilczyński <[email protected]>

Krzysztof

2021-04-30 17:58:13

by Bjorn Helgaas

[permalink] [raw]
Subject: Re: [PATCH] nvme: fix unused variable warning

On Wed, Apr 21, 2021 at 04:04:20PM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <[email protected]>
>
> The function was introduced with a variable that is never referenced:
>
> drivers/pci/quirks.c: In function 'quirk_amd_nvme_fixup':
> drivers/pci/quirks.c:312:25: warning: unused variable 'rdev' [-Wunused-variable]
>
> Fixes: 9597624ef606 ("nvme: put some AMD PCIE downstream NVME device to simple suspend/resume path")

I guess this refers to https://lore.kernel.org/linux-nvme/[email protected]/

But I don't know what the SHA1 means; I can't find it in linux-next or
my tree.

> Signed-off-by: Arnd Bergmann <[email protected]>
> ---
> drivers/pci/quirks.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
> index 2e24dced699a..c86ede081534 100644
> --- a/drivers/pci/quirks.c
> +++ b/drivers/pci/quirks.c
> @@ -309,8 +309,6 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopci
>
> static void quirk_amd_nvme_fixup(struct pci_dev *dev)
> {
> - struct pci_dev *rdev;
> -
> dev->dev_flags |= PCI_DEV_FLAGS_AMD_NVME_SIMPLE_SUSPEND;
> pci_info(dev, "AMD simple suspend opt enabled\n");
>
> --
> 2.29.2
>

2021-04-30 18:39:02

by Andy Shevchenko

[permalink] [raw]
Subject: Re: [PATCH] nvme: fix unused variable warning

On Fri, Apr 30, 2021 at 8:57 PM Bjorn Helgaas <[email protected]> wrote:
> On Wed, Apr 21, 2021 at 04:04:20PM +0200, Arnd Bergmann wrote:
> > From: Arnd Bergmann <[email protected]>
> >
> > The function was introduced with a variable that is never referenced:
> >
> > drivers/pci/quirks.c: In function 'quirk_amd_nvme_fixup':
> > drivers/pci/quirks.c:312:25: warning: unused variable 'rdev' [-Wunused-variable]
> >
> > Fixes: 9597624ef606 ("nvme: put some AMD PCIE downstream NVME device to simple suspend/resume path")
>
> I guess this refers to https://lore.kernel.org/linux-nvme/[email protected]/
>
> But I don't know what the SHA1 means; I can't find it in linux-next or
> my tree.

$ git tag --contains 9597624ef606
next-20210416
next-20210419
next-20210420

Something is wrong with your tree.

--
With Best Regards,
Andy Shevchenko

2021-04-30 19:01:49

by Bjorn Helgaas

[permalink] [raw]
Subject: Re: [PATCH] nvme: fix unused variable warning

On Fri, Apr 30, 2021 at 09:34:55PM +0300, Andy Shevchenko wrote:
> On Fri, Apr 30, 2021 at 8:57 PM Bjorn Helgaas <[email protected]> wrote:
> > On Wed, Apr 21, 2021 at 04:04:20PM +0200, Arnd Bergmann wrote:
> > > From: Arnd Bergmann <[email protected]>
> > >
> > > The function was introduced with a variable that is never referenced:
> > >
> > > drivers/pci/quirks.c: In function 'quirk_amd_nvme_fixup':
> > > drivers/pci/quirks.c:312:25: warning: unused variable 'rdev' [-Wunused-variable]
> > >
> > > Fixes: 9597624ef606 ("nvme: put some AMD PCIE downstream NVME device to simple suspend/resume path")
> >
> > I guess this refers to https://lore.kernel.org/linux-nvme/[email protected]/
> >
> > But I don't know what the SHA1 means; I can't find it in linux-next or
> > my tree.
>
> $ git tag --contains 9597624ef606
> next-20210416
> next-20210419
> next-20210420
>
> Something is wrong with your tree.

I think what's wrong is that it doesn't appear in the *current*
linux-next (next-20210430) and I don't have all the old linux-next
objects.

It was in next-20210420, but seems to have been dropped since then:

https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/include/linux/pci.h?h=next-20210420&id=9597624ef6067bab1500d0273a43d4f90e62e929

2021-04-30 19:25:00

by Deucher, Alexander

[permalink] [raw]
Subject: RE: [PATCH] nvme: fix unused variable warning

[AMD Public Use]

> -----Original Message-----
> From: Bjorn Helgaas <[email protected]>
> Sent: Friday, April 30, 2021 3:01 PM
> To: Andy Shevchenko <[email protected]>
> Cc: Arnd Bergmann <[email protected]>; Bjorn Helgaas
> <[email protected]>; Liang, Prike <[email protected]>; S-k, Shyam-
> sundar <[email protected]>; Deucher, Alexander
> <[email protected]>; Chaitanya Kulkarni
> <[email protected]>; Arnd Bergmann <[email protected]>; Lorenzo
> Pieralisi <[email protected]>; Kai-Heng Feng
> <[email protected]>; Krzysztof Wilczy?ski <[email protected]>;
> Rajat Jain <[email protected]>; Andy Shevchenko
> <[email protected]>; linux-pci <linux-
> [email protected]>; Linux Kernel Mailing List <linux-
> [email protected]>
> Subject: Re: [PATCH] nvme: fix unused variable warning
>
> On Fri, Apr 30, 2021 at 09:34:55PM +0300, Andy Shevchenko wrote:
> > On Fri, Apr 30, 2021 at 8:57 PM Bjorn Helgaas <[email protected]> wrote:
> > > On Wed, Apr 21, 2021 at 04:04:20PM +0200, Arnd Bergmann wrote:
> > > > From: Arnd Bergmann <[email protected]>
> > > >
> > > > The function was introduced with a variable that is never referenced:
> > > >
> > > > drivers/pci/quirks.c: In function 'quirk_amd_nvme_fixup':
> > > > drivers/pci/quirks.c:312:25: warning: unused variable 'rdev'
> > > > [-Wunused-variable]
> > > >
> > > > Fixes: 9597624ef606 ("nvme: put some AMD PCIE downstream NVME
> > > > device to simple suspend/resume path")
> > >
> > > I guess this refers to
> > >
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flo
> > > re.kernel.org%2Flinux-nvme%2F1618458725-17164-1-git-send-email-
> Prike
> > >
> .Liang%40amd.com%2F&amp;data=04%7C01%7Calexander.deucher%40amd.
> com%7
> > >
> C23a1908e8a394d957ce908d90c0a4b06%7C3dd8961fe4884e608e11a82d994e1
> 83d
> > >
> %7C0%7C0%7C637554060633362710%7CUnknown%7CTWFpbGZsb3d8eyJWIj
> oiMC4wLj
> > >
> AwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;
> sdat
> > >
> a=Ztcffnpa8rchwe%2Fb6HuHeRASSlNI7uMwAKZuoH5k6CY%3D&amp;reserv
> ed=0
> > >
> > > But I don't know what the SHA1 means; I can't find it in linux-next
> > > or my tree.
> >
> > $ git tag --contains 9597624ef606
> > next-20210416
> > next-20210419
> > next-20210420
> >
> > Something is wrong with your tree.
>
> I think what's wrong is that it doesn't appear in the *current* linux-next
> (next-20210430) and I don't have all the old linux-next objects.
>
> It was in next-20210420, but seems to have been dropped since then:

It was in my tree briefly to facilitate testing, but I since dropped it.

Alex

>
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.k
> ernel.org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Fnext%2Flinux-
> next.git%2Fcommit%2Finclude%2Flinux%2Fpci.h%3Fh%3Dnext-
> 20210420%26id%3D9597624ef6067bab1500d0273a43d4f90e62e929&amp;data
> =04%7C01%7Calexander.deucher%40amd.com%7C23a1908e8a394d957ce908
> d90c0a4b06%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C6375540
> 60633362710%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQ
> IjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=0Rb%2
> F9p8VhmiPu4QP3mEJTUCPe4NNcroFHDhyiYb8h40%3D&amp;reserved=0