[PATCH 1/2] powerpc/crashdump: Fix issues with kexec and 36bit physical addr

[Matthew McClintock]

Fix sizes of variables so correct values are exported via /proc.
Cast variable in comparison to avoid compiler error.

Signed-off-by: Matthew McClintock <msm at freescale.com>
---
 arch/powerpc/kernel/crash_dump.c    |    4 ++--
 arch/powerpc/kernel/machine_kexec.c |    4 +++-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/kernel/crash_dump.c b/arch/powerpc/kernel/crash_dump.c
index 5fb667a..71cadde 100644
--- a/arch/powerpc/kernel/crash_dump.c
+++ b/arch/powerpc/kernel/crash_dump.c
@@ -128,9 +128,9 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf,
 	if (!csize)
 		return 0;
 
-	csize = min(csize, PAGE_SIZE);
+	csize = min(csize, (size_t)PAGE_SIZE);
 
-	if (pfn < max_pfn) {
+	if ((min_low_pfn < pfn) && (pfn < max_pfn)) {
 		vaddr = __va(pfn << PAGE_SHIFT);
 		csize = copy_oldmem_vaddr(vaddr, buf, csize, offset, userbuf);
 	} else {
diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c
index bb3d893..ec7f054 100644
--- a/arch/powerpc/kernel/machine_kexec.c
+++ b/arch/powerpc/kernel/machine_kexec.c
@@ -145,6 +145,7 @@ int overlaps_crashkernel(unsigned long start, unsigned long size)
 
 /* Values we need to export to the second kernel via the device tree. */
 static unsigned long kernel_end;
+static unsigned long crashk_start;
 static unsigned long crashk_size;
 
 static struct property kernel_end_prop = {
@@ -156,7 +157,7 @@ static struct property kernel_end_prop = {
 static struct property crashk_base_prop = {
 	.name = "linux,crashkernel-base",
 	.length = sizeof(unsigned long),
-	.value = &crashk_res.start,
+	.value = &crashk_start,
 };
 
 static struct property crashk_size_prop = {
@@ -180,6 +181,7 @@ static void __init export_crashk_values(struct device_node *node)
 		prom_remove_property(node, prop);
 
 	if (crashk_res.start != 0) {
+		crashk_start = crashk_res.start;
 		prom_add_property(node, &crashk_base_prop);
 		crashk_size = crashk_res.end - crashk_res.start + 1;
 		prom_add_property(node, &crashk_size_prop);
-- 
1.6.6.1