diff options
| author | Haiyang Zhang <[email protected]> | 2021-05-25 16:17:33 -0700 |
|---|---|---|
| committer | Wei Liu <[email protected]> | 2021-06-20 23:08:56 +0000 |
| commit | 7d815f4afa87f2032b650ae1bba7534b550a6b8b (patch) | |
| tree | 3dbbec7c86a6b34b324ef050a0f47a5436e9f6e8 | |
| parent | a4d7e8ae4a541557d7a2c815835b786c18c3613c (diff) | |
PCI: hv: Add check for hyperv_initialized in init_hv_pci_drv()
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 <[email protected]>
Reported-and-tested-by: Mohammad Alqayeem <[email protected]>
Reviewed-by: Wei Liu <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Wei Liu <[email protected]>
| -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 6511648271b2..bebe3eeebc4e 100644 --- a/drivers/pci/controller/pci-hyperv.c +++ b/drivers/pci/controller/pci-hyperv.c @@ -3476,6 +3476,9 @@ 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); |