[PATCH v2 4/9] PBL: fdt: refactor helper for reading nr of cells

[Michael Tretter <m.tretter@pengutronix.de>]

Since libfdt now contains fdt_addresses, the fdt_find_mem function can
use the already existing helpers to read #size-cells and #address-cells.

Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
---
Changes in v2:
- none
---
 pbl/fdt.c | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/pbl/fdt.c b/pbl/fdt.c
index 8e4d1295074a6b8dc4ad07ad2ada5882148c9ce6..3b1783152a8cb81f3eda1187b2f7bf998c4addf4 100644
--- a/pbl/fdt.c
+++ b/pbl/fdt.c
@@ -17,8 +17,8 @@ static const __be32 *fdt_parse_reg(const __be32 *reg, uint32_t n,
 
 void fdt_find_mem(const void *fdt, unsigned long *membase, unsigned long *memsize)
 {
-	const __be32 *nap, *nsp, *reg;
-	uint32_t na, ns;
+	const __be32 *reg;
+	int na, ns;
 	uint64_t memsize64, membase64;
 	int node, size;
 
@@ -28,26 +28,23 @@ void fdt_find_mem(const void *fdt, unsigned long *membase, unsigned long *memsiz
 		goto err;
 	}
 
-	/* Find the #address-cells and #size-cells properties */
 	node = fdt_path_offset(fdt, "/");
 	if (node < 0) {
 		pr_err("Cannot find root node\n");
 		goto err;
 	}
 
-	nap = fdt_getprop(fdt, node, "#address-cells", &size);
-	if (!nap || (size != 4)) {
+	na = fdt_address_cells(fdt, node);
+	if (na < 0) {
 		pr_err("Cannot find #address-cells property");
 		goto err;
 	}
-	na = fdt32_to_cpu(*nap);
 
-	nsp = fdt_getprop(fdt, node, "#size-cells", &size);
-	if (!nsp || (size != 4)) {
+	ns = fdt_size_cells(fdt, node);
+	if (ns < 0) {
 		pr_err("Cannot find #size-cells property");
 		goto err;
 	}
-	ns = fdt32_to_cpu(*nsp);
 
 	/* Find the memory range */
 	node = fdt_node_offset_by_prop_value(fdt, -1, "device_type",

-- 
2.39.5