Messages in this thread Patch in this message | | | From | Haiyang Zhang <> | Subject | [PATCH] pci-hyperv: Add check for hyperv_initialized in init_hv_pci_drv() | Date | Tue, 25 May 2021 16:17:33 -0700 |
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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> --- 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 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); -- 2.25.1
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