linux-kernel - linux-next: build warning after merge of the nvmem tree

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Date:   Fri, 6 Mar 2020 15:28:27 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc:     Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        PrasannaKumar Muralidharan <prasannatsmkumar@...il.com>,
        Mathieu Malaterre <malat@...ian.org>,
        "H. Nikolaus Schaller" <hns@...delico.com>,
        Paul Cercueil <paul@...pouillou.net>
Subject: linux-next: build warning after merge of the nvmem tree

Hi all,

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

In file included from include/linux/clk.h:13,
                 from drivers/nvmem/jz4780-efuse.c:25:
drivers/nvmem/jz4780-efuse.c: In function 'jz4780_efuse_read':
include/linux/kernel.h:842:29: warning: comparison of distinct pointer types lacks a cast
  842 |   (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
      |                             ^~
include/linux/kernel.h:856:4: note: in expansion of macro '__typecheck'
  856 |   (__typecheck(x, y) && __no_side_effects(x, y))
      |    ^~~~~~~~~~~
include/linux/kernel.h:866:24: note: in expansion of macro '__safe_cmp'
  866 |  __builtin_choose_expr(__safe_cmp(x, y), \
      |                        ^~~~~~~~~~
include/linux/kernel.h:875:19: note: in expansion of macro '__careful_cmp'
  875 | #define min(x, y) __careful_cmp(x, y, <)
      |                   ^~~~~~~~~~~~~
drivers/nvmem/jz4780-efuse.c:76:24: note: in expansion of macro 'min'
   76 |   unsigned int chunk = min(bytes, (start + JZ_EFU_READ_SIZE)
      |                        ^~~

Introduced by commit

  50a09dfd394a ("nvmem: add driver for JZ4780 efuse")

-- 
Cheers,
Stephen Rothwell

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