linux-kernel - Re: checkpatch.pl: false warning about "-p0 patch"

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Date:	Thu, 22 Aug 2013 15:30:38 -0700
From:	Joe Perches <joe@...ches.com>
To:	Brian Norris <computersforpeace@...il.com>
Cc:	Andy Whitcroft <apw@...onical.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: checkpatch.pl: false warning about "-p0 patch"

On Thu, 2013-08-22 at 15:14 -0700, Brian Norris wrote:
> I realized the problem is simply with the existence of a file
> named 'b'. That is, checkpatch will give a warning for this:
>   touch b
>   git format-patch -1 --stdout | scripts/checkpatch.pl -
>   WARNING: patch prefix 'b' exists, appears to be a -p0 patch
> Is that expected?

Yes.  Basically, don't have a file (or a directory)
named a or b in the kernel root directory.

			if (!$file && $tree && $p1_prefix ne '' &&
			    -e "$root/$p1_prefix") {
				WARN("PATCH_PREFIX",
				     "patch prefix '$p1_prefix' exists, appears to be a -p0 patch\n");
			}


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