linux-kernel - Re: [PATCH] PCI: pci-hyperv: fix build errors on non-SYSFS config

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Date:   Sat, 13 Jul 2019 11:03:53 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     Haiyang Zhang <haiyangz@...rosoft.com>
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        linux-pci <linux-pci@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Matthew Wilcox <willy@...radead.org>,
        Jake Oshins <jakeo@...rosoft.com>,
        KY Srinivasan <kys@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Stephen Hemminger <stephen@...workplumber.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Dexuan Cui <decui@...rosoft.com>
Subject: Re: [PATCH] PCI: pci-hyperv: fix build errors on non-SYSFS config

On Fri, Jul 12, 2019 at 04:04:17PM +0000, Haiyang Zhang wrote:
>
>
>> -----Original Message-----
>> From: Randy Dunlap <rdunlap@...radead.org>
>> Sent: Friday, July 12, 2019 11:53 AM
>> To: linux-pci <linux-pci@...r.kernel.org>; LKML <linux-
>> kernel@...r.kernel.org>
>> Cc: Matthew Wilcox <willy@...radead.org>; Jake Oshins
>> <jakeo@...rosoft.com>; KY Srinivasan <kys@...rosoft.com>; Haiyang
>> Zhang <haiyangz@...rosoft.com>; Stephen Hemminger
>> <sthemmin@...rosoft.com>; Stephen Hemminger
>> <stephen@...workplumber.org>; Sasha Levin <sashal@...nel.org>; Bjorn
>> Helgaas <bhelgaas@...gle.com>; Dexuan Cui <decui@...rosoft.com>
>> Subject: [PATCH] PCI: pci-hyperv: fix build errors on non-SYSFS config
>>
>> From: Randy Dunlap <rdunlap@...radead.org>
>>
>> Fix build errors when building almost-allmodconfig but with SYSFS
>> not set (not enabled).  Fixes these build errors:
>>
>> ERROR: "pci_destroy_slot" [drivers/pci/controller/pci-hyperv.ko] undefined!
>> ERROR: "pci_create_slot" [drivers/pci/controller/pci-hyperv.ko] undefined!
>>
>> drivers/pci/slot.o is only built when SYSFS is enabled, so
>> pci-hyperv.o has an implicit dependency on SYSFS.
>> Make that explicit.
>>
>> Also, depending on X86 && X86_64 is not needed, so just change that
>> to depend on X86_64.
>>
>> Fixes: a15f2c08c708 ("PCI: hv: support reporting serial number as slot
>> information")
>>
>> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
>> Cc: Matthew Wilcox <willy@...radead.org>
>> Cc: Jake Oshins <jakeo@...rosoft.com>
>> Cc: "K. Y. Srinivasan" <kys@...rosoft.com>
>> Cc: Haiyang Zhang <haiyangz@...rosoft.com>
>> Cc: Stephen Hemminger <sthemmin@...rosoft.com>
>> Cc: Stephen Hemminger <stephen@...workplumber.org>
>> Cc: Sasha Levin <sashal@...nel.org>
>> Cc: Bjorn Helgaas <bhelgaas@...gle.com>
>> Cc: linux-pci@...r.kernel.org
>> Cc: linux-hyperv@...r.kernel.org
>> Cc: Dexuan Cui <decui@...rosoft.com>
>> ---
>> v3: corrected Fixes: tag [Dexuan Cui <decui@...rosoft.com>]
>>     This is the Microsoft-preferred version of the patch.
>>
>>  drivers/pci/Kconfig |    2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> --- lnx-52.orig/drivers/pci/Kconfig
>> +++ lnx-52/drivers/pci/Kconfig
>> @@ -181,7 +181,7 @@ config PCI_LABEL
>>
>>  config PCI_HYPERV
>>          tristate "Hyper-V PCI Frontend"
>> -        depends on X86 && HYPERV && PCI_MSI && PCI_MSI_IRQ_DOMAIN
>> && X86_64
>> +        depends on X86_64 && HYPERV && PCI_MSI &&
>> PCI_MSI_IRQ_DOMAIN && SYSFS
>>          help
>>            The PCI device frontend driver allows the kernel to import arbitrary
>>            PCI devices from a PCI backend to support PCI driver domains.
>>
>
>Reviewed-by: Haiyang Zhang <haiyangz@...rosoft.com>

Queued up for hyperv-fixes, thank you!

--
Thanks,
Sasha