[PATCH 3/3] simplefb-fixup: add reserved memory-region entry for the simple-framebuffer

[Michael Grzeschik]

The modern way to describe an reserved memory region is to place an
entry in the reserved-memory nodes. Using the of_fixup_reserved_memory
this is simply done.

Signed-off-by: Michael Grzeschik <m.grzeschik at pengutronix.de>
---
 drivers/video/simplefb-fixup.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/video/simplefb-fixup.c b/drivers/video/simplefb-fixup.c
index 9b39e1ef46d84eed61242119251d340b44d59a6e..e20f2922445bddcb13a049b2581c4c632289d6ee 100644
--- a/drivers/video/simplefb-fixup.c
+++ b/drivers/video/simplefb-fixup.c
@@ -13,6 +13,7 @@
 #include <fb.h>
 #include <fcntl.h>
 #include <fs.h>
+#include <of.h>
 #include <init.h>
 #include <xfuncs.h>
 
@@ -93,6 +94,7 @@ static int simplefb_create_node(struct device_node *root,
 	phys_addr_t screen_base;
 	__be32 cells[4];
 	int addr_cells = 2, size_cells = 1, ret;
+	struct resource res = { };
 
 	of_property_read_u32(root, "#address-cells", &addr_cells);
 	of_property_read_u32(root, "#size-cells", &size_cells);
@@ -121,6 +123,12 @@ static int simplefb_create_node(struct device_node *root,
 	if (ret < 0)
 		return ret;
 
+	res.name = "simple-framebuffer";
+	res.flags |= IORESOURCE_BUSY;
+	resource_set_range(&res, screen_base, fbi->screen_size);
+
+	of_fixup_reserved_memory(root, &res);
+
 	cells[0] = cpu_to_be32(fbi->xres);
 	ret = of_set_property(node, "width", cells, sizeof(cells[0]), 1);
 	if (ret < 0)
@@ -140,8 +148,6 @@ static int simplefb_create_node(struct device_node *root,
 	if (ret < 0)
 		return ret;
 
-	of_add_reserve_entry(screen_base, screen_base + fbi->screen_size);
-
 	return of_property_write_string(node, "status", "okay");
 }
 

-- 
2.47.3