linux-kernel - Re: [PATCH] staging: pi433: fix check for FDEVMSB register mask

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Message-ID: <20170815005710.GA23328@kroah.com>
Date:   Mon, 14 Aug 2017 17:57:10 -0700
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Frederico Cadete <frederico@...ete.eu>
Cc:     linux-kernel@...r.kernel.org, linux@...f-Entwicklungen.de
Subject: Re: [PATCH] staging: pi433: fix check for FDEVMSB register mask

On Sun, Aug 13, 2017 at 09:43:50PM +0200, Frederico Cadete wrote:
> The code was using the logical negation operator "!", effectively never
> triggering the error path. To check the bitmask we should use the
> bitwise negation "~".
> 
> Cleans up sparse warning:
>   warning: dubious: x & !y
> 
> Signed-off-by: Frederico Cadete <frederico@...ete.eu>
> ---
>  drivers/staging/pi433/rf69.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Does not apply to my tree :(