x86: cleanup e820_setup_gap(), add e820_search_gap(), v2
This is a preparatory patch for the next patch in series.
Moves some code from e820_setup_gap to a new function e820_search_gap.
This patch is a part of a bug fix where we walk the ACPI table to calculate
a gap for PCI optional devices.
v1->v2: Patch on top of tip/master.
Fixes a bug introduced in the last patch about the typeof "last".
Also the new function e820_search_gap now returns if we found a gap in
e820_map.
Signed-off-by: Alok N Kataria <akataria@vmware.com>
Cc: lenb@kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/asm-x86/e820.h b/include/asm-x86/e820.h
index 13fa5a0..f622685 100644
--- a/include/asm-x86/e820.h
+++ b/include/asm-x86/e820.h
@@ -71,6 +71,8 @@
int checktype);
extern void update_e820(void);
extern void e820_setup_gap(void);
+extern int e820_search_gap(unsigned long *gapstart, unsigned long *gapsize,
+ unsigned long start_addr);
struct setup_data;
extern void parse_e820_ext(struct setup_data *data, unsigned long pa_data);