Subject: linux-next: build warning after merge of the device-mapper tree

From: Stephen Rothwell <[email-masked]>
Date: Thu, 9 Jul 2020 13:26:09 +1000

Hi all,

After merging the device-mapper tree, today's linux-next build (x86_64
allmodconfig) produced this warning:

In file included from drivers/md/dm-dust.c:11:
drivers/md/dm-dust.c: In function 'dust_list_badblocks':
drivers/md/dm-dust.c:307:10: warning: zero-length gnu_printf format string [-Wformat-zero-length]
  307 |   DMEMIT("");
      |          ^~
include/linux/device-mapper.h:555:46: note: in definition of macro 'DMEMIT'
  555 |      0 : scnprintf(result + sz, maxlen - sz, x))
      |                                              ^

Introduced by commit

  20f93ea74f9c ("dm dust: add interface to list all badblocks")

-- 
Cheers,
Stephen Rothwell