This is a note to let you know that I've just added the patch titled um: virt-pci: fix missing declaration warning to the 6.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: um-virt-pci-fix-missing-declaration-warning.patch and it can be found in the queue-6.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 4a86bae21a4320aa334bec045de22ca09e9ec78b Author: Vincent Whitchurch <vincent.whitchurch@xxxxxxxx> Date: Wed Aug 23 12:40:44 2023 +0200 um: virt-pci: fix missing declaration warning [ Upstream commit 974b808d85abbc03c3914af63d60d5816aabf2ca ] Fix this warning which appears with W=1 and without CONFIG_OF: warning: no previous declaration for 'pcibios_get_phb_of_node' Reported-by: kernel test robot <lkp@xxxxxxxxx> Closes: https://lore.kernel.org/oe-kbuild-all/202308230949.PphIIlhq-lkp@xxxxxxxxx/ Fixes: 314a1408b79a ("um: virt-pci: implement pcibios_get_phb_of_node()") Signed-off-by: Vincent Whitchurch <vincent.whitchurch@xxxxxxxx> Signed-off-by: Richard Weinberger <richard@xxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/arch/um/drivers/virt-pci.c b/arch/um/drivers/virt-pci.c index 7699ca5f35d48..ffe2ee8a02465 100644 --- a/arch/um/drivers/virt-pci.c +++ b/arch/um/drivers/virt-pci.c @@ -544,6 +544,7 @@ static void um_pci_irq_vq_cb(struct virtqueue *vq) } } +#ifdef CONFIG_OF /* Copied from arch/x86/kernel/devicetree.c */ struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus) { @@ -562,6 +563,7 @@ struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus) } return NULL; } +#endif static int um_pci_init_vqs(struct um_pci_device *dev) {