!4091 x86/quirks: Add parameter to clear MSIs early

Merge Pull Request from: @ci-robot 
 
PR sync from: Zheng Zengkai <zhengzengkai@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/HCLNL3C6YWUEAGH5U4RWTDDNVMP7D3XD/ 
A crash kernel boot failure issue is reported in openeuler 5.10 series kernel(in
x86 virtual machine with Hi1822 virtual nic). Finally the issue was narrowed
down to irq vector conflict.

Backport following patchset from kernel maillist to fix this issue.
https://lore.kernel.org/linux-pci/20181018183721.27467-3-gpiccoli@canonical.com/
Due to the virtual NICs in this issue is present under bus0, In order to avoid introducing
some more influence to the x86 early quirks handling, just backport the last 2 patches from
the original patchset.

Guilherme G. Piccoli (2):
  x86/PCI: Export find_cap() to be used in early PCI code
  x86/quirks: Add parameter to clear MSIs early on boot


-- 
2.20.1
 
https://gitee.com/openeuler/kernel/issues/I8X2RA 
 
Link:https://gitee.com/openeuler/kernel/pulls/4091

 

Reviewed-by: Jason Zeng <jason.zeng@intel.com>
Reviewed-by: Jialin Zhang <zhangjialin11@huawei.com>
Reviewed-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>