Messages in this thread | | | Date | Tue, 2 Aug 2022 15:18:53 -0700 | Subject | Re: [PATCH v3] PCI/ERR: Use pcie_aer_is_native() to judge whether OS owns AER | From | Sathyanarayanan Kuppuswamy <> |
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On 7/27/22 2:37 AM, Zhuo Chen wrote: >> > Do you mean changing "if ((host->native_aer || pcie_ports_native) && aer)" into "if (pcie_aer_is_native(dev) && aer)" ? > I thought changing into "if (pcie_aer_is_native(dev))" before. > > One another doubt. Not every pci device support aer. When dev->aer_cap is NULL and root->aer_cap is not NULL in aer_root_reset(), pcie_aer_is_native() will return false and OS cannot operate root register. It's different from just using "(host->native_aer || pcie_ports_native)". > > Or we can change "if ((host->native_aer || pcie_ports_native) && aer)" into "if (pcie_aer_is_native(root))". But in this way, argument NULL pointer check should be added in pcie_aer_is_native().
Looking into it again, I think it is better to leave it as it is. Please ignore my comment.
-- Sathyanarayanan Kuppuswamy Linux Kernel Developer
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