linux-kernel - Re: Probable false positive in checkpatch

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Date:	Fri, 28 Sep 2012 13:59:17 -0700
From:	Joe Perches <joe@...ches.com>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	Andy Whitcroft <apw@...onical.com>,
	Kernel development list <linux-kernel@...r.kernel.org>
Subject: Re: Probable false positive in checkpatch

On Fri, 2012-09-28 at 15:50 -0400, Alan Stern wrote:
> Here's what I just got from checkpatch:
> 
> ERROR: space prohibited after that '-' (ctx:BxW)
> #22: FILE: drivers/usb/host/ehci-sched.c:1419:
> +                       start += (next - start + period - 1) & (- period);
>                                                                 ^
> This seems unlikely to be a real style violation.  Or if it is, maybe 
> it shouldn't be.  After all, "(0 - period)" would be okay.

2c: I think the recommendation is proper and correct.



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