Re: [PATCH] isdn: isdnloop: fix logic error in isdnloop_sendbuf

From: David Miller
Date: Thu Sep 07 2017 - 23:04:37 EST


From: Arnd Bergmann <arnd@xxxxxxxx>
Date: Wed, 6 Sep 2017 15:38:58 +0200

> gcc-7 found an ancient bug in the loop driver, leading to a condition that
> is always false, meaning we ignore the contents of 'card->flags' here:
>
> drivers/isdn/isdnloop/isdnloop.c:412:37: error: ?: using integer constants in boolean context, the expression will always evaluate to 'true' [-Werror=int-in-bool-context]
>
> This changes the braces in the expression to ensure we actually
> compare the flag bits, rather than comparing a constant. As Joe Perches
> pointed out, an earlier patch of mine incorrectly assumed this was a
> false-positive warning.
>
> Cc: Joe Perches <joe@xxxxxxxxxxx>
> Link: https://patchwork.kernel.org/patch/9840289/
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>

Applied, thank you.