From: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx> [ Upstream commit 7d815f4afa87f2032b650ae1bba7534b550a6b8b ] Add check for hv_is_hyperv_initialized() at the top of init_hv_pci_drv(), so if the pci-hyperv driver is force-loaded on non Hyper-V platforms, the init_hv_pci_drv() will exit immediately, without any side effects, like assignments to hvpci_block_ops, etc. Signed-off-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx> Reported-and-tested-by: Mohammad Alqayeem <mohammad.alqyeem@xxxxxxxxxxx> Reviewed-by: Wei Liu <wei.liu@xxxxxxxxxx> Link: https://lore.kernel.org/r/1621984653-1210-1-git-send-email-haiyangz@xxxxxxxxxxxxx Signed-off-by: Wei Liu <wei.liu@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/pci/controller/pci-hyperv.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c index f1f300218fab..8c45d6c32c30 100644 --- a/drivers/pci/controller/pci-hyperv.c +++ b/drivers/pci/controller/pci-hyperv.c @@ -3121,6 +3121,9 @@ static void __exit exit_hv_pci_drv(void) static int __init init_hv_pci_drv(void) { + if (!hv_is_hyperv_initialized()) + return -ENODEV; + /* Set the invalid domain number's bit, so it will not be used */ set_bit(HVPCI_DOM_INVALID, hvpci_dom_map); -- 2.30.2
