# \[PATCH AUTOSEL 5.3 11/49\] PCI: pci-hyperv: Fix build errors on non-SYSFS config

- From: Sasha Levin \<sashal@kernel.org\>
- Date: 2019-09-29 17:31:26 
- List: linux-hyperv
- Page: https://ratatoskr.run/linux-hyperv/2019/09/5728969
- Thread: https://ratatoskr.run/stable/2019/09/5728963/t.md

```text
From: Randy Dunlap <rdunlap@infradead.org>

[ Upstream commit f58ba5e3f6863ea4486952698898848a6db726c2 ]

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@infradead.org>
Signed-off-by: Lorenzo Pieralisi <redacted>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Jake Oshins <redacted>
Cc: "K. Y. Srinivasan" <redacted>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Stephen Hemminger <redacted>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: Sasha Levin <sashal@kernel.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: <redacted>
Cc: <redacted>
Cc: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pci/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index 2ab92409210af..297bf928d6522 100644
--- a/drivers/pci/Kconfig
+++ b/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.
-- 
2.20.1

```