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Date:   Sun, 17 May 2020 21:25:05 +0100
From:   Pascal Terjan <>
To:     Greg Kroah-Hartman <>,,
Subject: Re: [PATCH] staging: rtl8192u: Merge almost duplicate code

On Sun, 17 May 2020 at 17:58, Pascal Terjan <> wrote:
> This causes a change in behaviour:
> - stats also get updated when reordering, this seems like it should be
>   the case but those lines were commented out.
> - sub_skb NULL check now happens early in both cases, previously it
>   happened only after dereferencing it 12 times, so it may not actually
>   be needed.

I actually noticed the same duplicated code (and same late NULL check)
in drivers/staging/rtl8192e/rtllib_rx.c
drivers/staging/rtl8712/rtl8712_recv.c has only one copy of the code
but with the late NULL check
drivers/staging/rtl8188eu/core/rtw_recv.c has only one copy of the
code and doesn't do any NULL check

Now I wonder how to proceed. The code is not great so it would not
feel right to make it reusable.
Should I continue improving it on this driver only first (maybe trying
to reuse ieee80211_data_to_8023_exthdr from net/wireless/util.c for

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