linux-kernel - [PATCH] vmcore: replace Elf64_Ehdr/Elf32

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Message-ID: <1442372321-16334-2-git-send-email-yanjiang.jin@windriver.com>
Date:	Wed, 16 Sep 2015 10:58:41 +0800
From:	<yanjiang.jin@...driver.com>
To:	<akpm@...ux-foundation.org>
CC:	<chaowang@...hat.com>, <yanjiang.jin@...driver.com>,
	<linux-kernel@...r.kernel.org>, <jinyanjiang@...il.com>
Subject: [PATCH] vmcore: replace Elf64_Ehdr/Elf32_Ehdr with elfhdr

From: Yanjiang Jin <yanjiang.jin@...driver.com>

Function parse_crash_elf_headers() reads e_ident[EI_CLASS] then decides to
call parse_crash_elf64_headers() or parse_crash_elf32_headers().
But this happens in run time, not compile time. So compiler will report
the below warning:

In file included from include/linux/elf.h:4:0,
                 from fs/proc/vmcore.c:13:
fs/proc/vmcore.c: In function 'parse_crash_elf32_headers':
arch/mips/include/asm/elf.h:258:23: warning: initializatio
n from incompatible pointer type
  struct elfhdr *__h = (hdr);     \
                       ^
fs/proc/vmcore.c:1071:4: note: in expansion of macro 'elf_
check_arch'
   !elf_check_arch(&ehdr) ||
    ^

Signed-off-by: Yanjiang Jin <yanjiang.jin@...driver.com>
---
 fs/proc/vmcore.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index 4e61388..576bb26 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -999,7 +999,7 @@ static void free_elfcorebuf(void)
 static int __init parse_crash_elf64_headers(void)
 {
 	int rc=0;
-	Elf64_Ehdr ehdr;
+	struct elfhdr ehdr;
 	u64 addr;
 
 	addr = elfcorehdr_addr;
@@ -1055,7 +1055,7 @@ fail:
 static int __init parse_crash_elf32_headers(void)
 {
 	int rc=0;
-	Elf32_Ehdr ehdr;
+	struct elfhdr ehdr;
 	u64 addr;
 
 	addr = elfcorehdr_addr;
-- 
1.9.1

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