scripts/kernel-doc: Don't fail with status != 0 if error encountered with -none
authorWill Deacon <will.deacon@arm.com>
Wed, 29 Nov 2017 15:20:03 +0000 (15:20 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 25 Feb 2018 10:07:58 +0000 (11:07 +0100)
commit9537ff76fa06b7dfac07a6634d213282d6406fec
tree3b92469c3b1f634c5283979fb978b22d9eec0a65
parentb0d049e9131406607cabe6e508463584613fb36e
scripts/kernel-doc: Don't fail with status != 0 if error encountered with -none

[ 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@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
scripts/kernel-doc