[PATCH] crash_dump: fix compilation error (on MIPS at least)

[Qais Yousef]

  In file included from kernel/crash_dump.c:2:0:
  include/linux/crash_dump.h:22:27: error: unknown type name âpgprot_tâ

when CONFIG_CRASH_DUMP=y

The error was traced back to this commit:

  9cb218131de1 vmcore: introduce remap_oldmem_pfn_range()

include <asm/pgtable.h> to get the missing definition

Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Michael Holzheu <holzheu@xxxxxxxxxxxxxxxxxx>
Cc: Vivek Goyal <vgoyal@xxxxxxxxxx>
Cc: <linux-mips@xxxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # 3.12
Reviewed-by: James Hogan <james.hogan@xxxxxxxxxx>
Signed-off-by: Qais Yousef <qais.yousef@xxxxxxxxxx>
---
I haven't tried any other architecture except mips.
If OK this should be considered for stable 3.12 (CCed).

 include/linux/crash_dump.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/include/linux/crash_dump.h b/include/linux/crash_dump.h
index fe68a5a..7032518 100644
--- a/include/linux/crash_dump.h
+++ b/include/linux/crash_dump.h
@@ -6,6 +6,8 @@
 #include <linux/proc_fs.h>
 #include <linux/elf.h>
 
+#include <asm/pgtable.h> /* for pgprot_t */
+
 #define ELFCORE_ADDR_MAX	(-1ULL)
 #define ELFCORE_ADDR_ERR	(-2ULL)
 
-- 
1.7.1


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