[PATCH AUTOSEL 4.9 74/91] x86/crash: Add a forward declaration of struct kimage

[Sasha Levin]

From: Lianbo Jiang <lijiang@xxxxxxxxxx>

[ Upstream commit 112eee5d06007dae561f14458bde7f2a4879ef4e ]

Add a forward declaration of struct kimage to the crash.h header because
future changes will invoke a crash-specific function from the realmode
init path and the compiler will complain otherwise like this:

  In file included from arch/x86/realmode/init.c:11:
  ./arch/x86/include/asm/crash.h:5:32: warning: âstruct kimageâ declared inside\
   parameter list will not be visible outside of this definition or declaration
      5 | int crash_load_segments(struct kimage *image);
        |                                ^~~~~~
  ./arch/x86/include/asm/crash.h:6:37: warning: âstruct kimageâ declared inside\
   parameter list will not be visible outside of this definition or declaration
      6 | int crash_copy_backup_region(struct kimage *image);
        |                                     ^~~~~~
  ./arch/x86/include/asm/crash.h:7:39: warning: âstruct kimageâ declared inside\
   parameter list will not be visible outside of this definition or declaration
      7 | int crash_setup_memmap_entries(struct kimage *image,
        |

 [ bp: Rewrite the commit message. ]

Reported-by: kbuild test robot <lkp@xxxxxxxxx>
Signed-off-by: Lianbo Jiang <lijiang@xxxxxxxxxx>
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Cc: bhe@xxxxxxxxxx
Cc: d.hatayama@xxxxxxxxxxx
Cc: dhowells@xxxxxxxxxx
Cc: dyoung@xxxxxxxxxx
Cc: ebiederm@xxxxxxxxxxxx
Cc: horms@xxxxxxxxxxxx
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: JÃrgen Gross <jgross@xxxxxxxx>
Cc: kexec@xxxxxxxxxxxxxxxxxxx
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Tom Lendacky <thomas.lendacky@xxxxxxx>
Cc: vgoyal@xxxxxxxxxx
Cc: x86-ml <x86@xxxxxxxxxx>
Link: https://lkml.kernel.org/r/20191108090027.11082-4-lijiang@xxxxxxxxxx
Link: https://lkml.kernel.org/r/201910310233.EJRtTMWP%25lkp@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 arch/x86/include/asm/crash.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/include/asm/crash.h b/arch/x86/include/asm/crash.h
index f498411f2500b..1b15304dd0980 100644
--- a/arch/x86/include/asm/crash.h
+++ b/arch/x86/include/asm/crash.h
@@ -1,6 +1,8 @@
 #ifndef _ASM_X86_CRASH_H
 #define _ASM_X86_CRASH_H
 
+struct kimage;
+
 int crash_load_segments(struct kimage *image);
 int crash_copy_backup_region(struct kimage *image);
 int crash_setup_memmap_entries(struct kimage *image,
-- 
2.20.1