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Re: [PATCH] staging: comedi: dt2811: add parentheses to fix logic on s->subdev_flags

From Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Newsgroups linux.kernel
Subject Re: [PATCH] staging: comedi: dt2811: add parentheses to fix logic on s->subdev_flags
Date 2016-08-21 23:20 +0200
Message-ID <s8IjU-5CK-7@gated-at.bofh.it> (permalink)
References <rYWxS-25U-89@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Mon, Jul 25, 2016 at 11:25:25PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
> 
> We need to add parentheses around ternary operations because currently
> the expression SDF_READABLE | (it->options[2] == 1) always evaluates to
> true, meaning s->subdev_flags is always assigned SDF_DIFF. Putting the
> parentheses around the ternarary operations results in the intended
> expression of SDF_REABLE logically or'd with one of SDF_DIFF,
> SDF_COMMON or SDF_GROUND.
> 
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> Fixes: 7c9574090d30 ("staging: comedi: dt2811: simplify A/D reference configuration")
> Cc: <stable@vger.kernel.org> # 4.7+
> Reviewed-by: Ian Abbott <abbotti@mev.co.uk>


Dan sent a patch for this before you did :(

And this went into 4.8-rc1, not 4.7.

thanks,

greg k-h

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Re: [PATCH] staging: comedi: dt2811: add parentheses to fix logic on  s->subdev_flags Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-08-21 23:20 +0200

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