From: Nathan Chancellor <natechancellor@gmail.com>
To: Heiko Carstens <heiko.carstens@de.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Christian Borntraeger <borntraeger@de.ibm.com>
Cc: linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org,
clang-built-linux@googlegroups.com,
Nathan Chancellor <natechancellor@gmail.com>
Subject: [PATCH] s390/time: Fix clk type in get_tod_clock
Date: Sat, 8 Feb 2020 07:08:59 -0700 [thread overview]
Message-ID: <20200208140858.47970-1-natechancellor@gmail.com> (raw)
Clang warns:
In file included from ../arch/s390/boot/startup.c:3:
In file included from ../include/linux/elf.h:5:
In file included from ../arch/s390/include/asm/elf.h:132:
In file included from ../include/linux/compat.h:10:
In file included from ../include/linux/time.h:74:
In file included from ../include/linux/time32.h:13:
In file included from ../include/linux/timex.h:65:
../arch/s390/include/asm/timex.h:160:20: warning: passing 'unsigned char
[16]' to parameter of type 'char *' converts between pointers to integer
types with different sign [-Wpointer-sign]
get_tod_clock_ext(clk);
^~~
../arch/s390/include/asm/timex.h:149:44: note: passing argument to
parameter 'clk' here
static inline void get_tod_clock_ext(char *clk)
^
Change clk's type to just be char so that it matches what happens in
get_tod_clock_ext.
Fixes: 57b28f66316d ("[S390] s390_hypfs: Add new attributes")
Link: https://github.com/ClangBuiltLinux/linux/issues/861
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
---
Alternatively, changing the clk type in get_tod_clock_ext to unsigned
which is what it was in the early 2000s.
arch/s390/include/asm/timex.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/s390/include/asm/timex.h b/arch/s390/include/asm/timex.h
index 670f14a228e5..6bf3a45ccfec 100644
--- a/arch/s390/include/asm/timex.h
+++ b/arch/s390/include/asm/timex.h
@@ -155,7 +155,7 @@ static inline void get_tod_clock_ext(char *clk)
static inline unsigned long long get_tod_clock(void)
{
- unsigned char clk[STORE_CLOCK_EXT_SIZE];
+ char clk[STORE_CLOCK_EXT_SIZE];
get_tod_clock_ext(clk);
return *((unsigned long long *)&clk[1]);
--
2.25.0
next reply other threads:[~2020-02-08 14:10 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-08 14:08 Nathan Chancellor [this message]
2020-02-08 17:18 ` [PATCH] s390/time: Fix clk type in get_tod_clock Nick Desaulniers
2020-02-11 13:12 ` Vasily Gorbik
2020-02-11 17:30 ` Nick Desaulniers
2020-02-11 19:53 ` Vasily Gorbik
2020-02-11 20:12 ` Nick Desaulniers
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