"Saheed O. Bolarinwa" [off-list ref] wrote:

From: Bolarinwa Olayemi Saheed <redacted>

On failure pcie_capability_read_dword() sets it's last parameter, val
to 0. However, with Patch 14/14, it is possible that val is set to ~0 on
failure. This would introduce a bug because (x & x) == (~0 & x).

This bug can be avoided without changing the function's behaviour if the
return value of pcie_capability_read_dword is checked to confirm success.

Check the return value of pcie_capability_read_dword() to ensure success.

Suggested-by: Bjorn Helgaas <redacted>
Signed-off-by: Bolarinwa Olayemi Saheed <redacted>

Patch applied to wireless-drivers-next.git, thanks.

9018fd7f2a73 iwlegacy: Check the return value of pcie_capability_read_*()

-- 
https://patchwork.kernel.org/patch/11660739/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches