This is a note to let you know that I've just added the patch titled

scripts/kernel-doc: Don't fail with status != 0 if error encountered with -none

to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: scripts-kernel-doc-don-t-fail-with-status-0-if-error-encountered-with-none.patch and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Fri Feb 23 11:48:40 CET 2018

From: Will Deacon will.deacon@arm.com Date: Wed, 29 Nov 2017 15:20:03 +0000 Subject: scripts/kernel-doc: Don't fail with status != 0 if error encountered with -none

From: Will Deacon will.deacon@arm.com

[ Upstream commit e814bccbafece52a24e152d2395b5d49eef55841 ]

My bisect scripts starting running into build failures when trying to compile 4.15-rc1 with the builds failing with things like:

drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c:2078: error: Cannot parse struct or union!

The line in question is actually just a #define, but after some digging it turns out that my scripts pass W=1 and since commit 3a025e1d1c2ea ("Add optional check for bad kernel-doc comments") that results in kernel-doc running on each source file. The file in question has a badly formatted comment immediately before the #define:

/** * struct brcmf_skbuff_cb reserves first two bytes in sk_buff::cb for * bus layer usage. */

which causes the regex in dump_struct to fail (lack of braces following struct declaration) and kernel-doc returns 1, which causes the build to fail.

Fix the issue by always returning 0 from kernel-doc when invoked with -none. It successfully generates no documentation, and prints out any issues.

Cc: Matthew Wilcox mawilcox@microsoft.com Cc: Jonathan Corbet corbet@lwn.net Signed-off-by: Will Deacon will.deacon@arm.com Signed-off-by: Jonathan Corbet corbet@lwn.net Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- scripts/kernel-doc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/scripts/kernel-doc +++ b/scripts/kernel-doc @@ -3139,4 +3139,4 @@ if ($verbose && $warnings) { print STDERR "$warnings warnings\n"; }

-exit($errors); +exit($output_mode eq "none" ? 0 : $errors);

Patches currently in stable-queue which might be from will.deacon@arm.com are

queue-4.9/scripts-kernel-doc-don-t-fail-with-status-0-if-error-encountered-with-none.patch