[PATCH] mtd: ofpart: support partitions of 4 GB and larger

[Aaron Sierra]

Author: Joe Schaack <jschaack at xes-inc.com>

Previously, partitions were limited to less than 4 GB in size because
the address and size were read as 32-bit values. Add support for 64-bit
values to support devices of 4 GB and larger.

Signed-off-by: Joe Schaack <jschaack at xes-inc.com>
Signed-off-by: Nate Case <ncase at xes-inc.com>
Signed-off-by: Aaron Sierra <asierra at xes-inc.com>
---
 drivers/mtd/ofpart.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/ofpart.c b/drivers/mtd/ofpart.c
index 30bd907..553d6d6 100644
--- a/drivers/mtd/ofpart.c
+++ b/drivers/mtd/ofpart.c
@@ -55,6 +55,7 @@ static int parse_ofpart_partitions(struct mtd_info *master,
 	while ((pp = of_get_next_child(node, pp))) {
 		const __be32 *reg;
 		int len;
+		int a_cells, s_cells;
 
 		reg = of_get_property(pp, "reg", &len);
 		if (!reg) {
@@ -62,8 +63,10 @@ static int parse_ofpart_partitions(struct mtd_info *master,
 			continue;
 		}
 
-		(*pparts)[i].offset = be32_to_cpu(reg[0]);
-		(*pparts)[i].size = be32_to_cpu(reg[1]);
+		a_cells = of_n_addr_cells(pp);
+		s_cells = of_n_size_cells(pp);
+		(*pparts)[i].offset = of_read_number(reg, a_cells);
+		(*pparts)[i].size = of_read_number(reg + a_cells, s_cells);
 
 		partname = of_get_property(pp, "label", &len);
 		if (!partname)
-- 
1.7.9.5