From: Kalle Valo <kvalo@codeaurora.org>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org,
Al Viro <viro@zeniv.linux.org.uk>,
Andy Shevchenko <andy.shevchenko@gmail.com>
Subject: Re: [v6,(resend),1/3] bitfield: fix *_encode_bits()
Date: Wed, 27 Jun 2018 16:00:09 +0000 (UTC) [thread overview]
Message-ID: <20180627160009.7F9BC606FA@smtp.codeaurora.org> (raw)
In-Reply-To: <20180620065830.6612-2-johannes@sipsolutions.net>
Johannes Berg <johannes@sipsolutions.net> wrote:
> There's a bug in *_encode_bits() in using ~field_multiplier() for
> the check whether or not the constant value fits into the field,
> this is wrong and clearly ~field_mask() was intended. This was
> triggering for me for both constant and non-constant values.
>
> Additionally, make this case actually into an compile error.
> Declaring the extern function that will never exist with just a
> warning is pointless as then later we'll just get a link error.
>
> While at it, also fix the indentation in those lines I'm touching.
>
> Finally, as suggested by Andy Shevchenko, add some tests and for
> that introduce also u8 helpers. The tests don't compile without
> the fix, showing that it's necessary.
>
> Fixes: 00b0c9b82663 ("Add primitives for manipulating bitfields both in host- and fixed-endian.")
> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
> Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
3 patches applied to wireless-drivers-next.git, thanks.
e7d4a95da86e bitfield: fix *_encode_bits()
37a3862e1238 bitfield: add u8 helpers
0e2dc70e3d0d bitfield: add tests
--
https://patchwork.kernel.org/patch/10476545/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
next prev parent reply other threads:[~2018-06-27 16:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-20 6:58 [PATCH v6 (resend) 0/3] bitfield fixes and tests Johannes Berg
2018-06-20 6:58 ` [PATCH v6 (resend) 1/3] bitfield: fix *_encode_bits() Johannes Berg
2018-06-27 16:00 ` Kalle Valo [this message]
2018-06-20 6:58 ` [PATCH v6 (resend) 2/3] bitfield: add u8 helpers Johannes Berg
2018-06-20 6:58 ` [PATCH v6 (resend) 3/3] bitfield: add tests Johannes Berg
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