diff options
| author | Haiyang Zhang <haiyangz@microsoft.com> | 2021-05-25 16:17:33 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-14 16:53:18 +0200 |
| commit | 0aebb12a574d41d5c2e186daefe89c290ee7cfcb (patch) | |
| tree | f8684a97f758e4e1bc4dc2f7a0856f4333e42556 /drivers | |
| parent | f53f229255d6f382e7942466f8f2da366a2173cb (diff) | |
PCI: hv: Add check for hyperv_initialized in init_hv_pci_drv()
[ 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@microsoft.com>
Reported-and-tested-by: Mohammad Alqayeem <mohammad.alqyeem@nutanix.com>
Reviewed-by: Wei Liu <wei.liu@kernel.org>
Link: https://lore.kernel.org/r/1621984653-1210-1-git-send-email-haiyangz@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pci/controller/pci-hyperv.c | 3 |
1 files changed, 3 insertions, 0 deletions
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); |