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Date:   Mon, 20 Jul 2020 17:09:51 +0000 (UTC)
From:   Kalle Valo <>
To:     "Saheed O. Bolarinwa" <>
        QCA ath9k Development <>,,,
        Bolarinwa Olayemi Saheed <>
Subject: Re: [PATCH 3/14 v3] ath9k: Check the return value of

"Saheed O. Bolarinwa" <> wrote:

> 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 <>
> Signed-off-by: Bolarinwa Olayemi Saheed <>
> Signed-off-by: Kalle Valo <>

Patch applied to ath-next branch of ath.git, thanks.

9a8ab2bfb678 ath9k: Check the return value of pcie_capability_read_*()


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