X-Git-Url: http://git.rohieb.name/openwrt.git/blobdiff_plain/ec6d32f924ee9e6b4d58885d2f692c8c2a4a2773..26e53509080efd718c6ab55eb00384d3d470a7e5:/target/linux/adm5120/files/drivers/mtd/maps/adm5120-flash.c?ds=sidebyside

diff --git a/target/linux/adm5120/files/drivers/mtd/maps/adm5120-flash.c b/target/linux/adm5120/files/drivers/mtd/maps/adm5120-flash.c
index e07fb96d2..824d2f5e8 100644
--- a/target/linux/adm5120/files/drivers/mtd/maps/adm5120-flash.c
+++ b/target/linux/adm5120/files/drivers/mtd/maps/adm5120-flash.c
@@ -220,14 +220,15 @@ static int adm5120_flash_initres(struct adm5120_flash_info *info)
 	struct map_info *map = &info->amap.map;
 	int err = 0;
 
-	info->res = request_mem_region(map->phys, map->size, map->name);
+	info->res = request_mem_region(map->phys, info->amap.window_size,
+			map->name);
 	if (info->res == NULL) {
 		MAP_ERR(map, "could not reserve memory region\n");
 		err = -ENOMEM;
 		goto out;
 	}
 
-	map->virt = ioremap_nocache(map->phys, map->size);
+	map->virt = ioremap_nocache(map->phys, info->amap.window_size);
 	if (map->virt == NULL) {
 		MAP_ERR(map, "failed to ioremap flash region\n");
 		err = -ENOMEM;
@@ -244,7 +245,7 @@ static int adm5120_flash_initinfo(struct adm5120_flash_info *info,
 	struct map_info *map = &info->amap.map;
 	struct adm5120_flash_platform_data *pdata = dev->dev.platform_data;
 	struct flash_desc *fdesc;
-	u32 t;
+	u32 t = 0;
 
 	map->name = dev->dev.bus_id;
 
@@ -255,12 +256,18 @@ static int adm5120_flash_initinfo(struct adm5120_flash_info *info,
 
 	fdesc = &flash_descs[dev->id];
 
-	/* get memory window size */
-	t = SW_READ_REG(MEMCTRL) >> fdesc->srs_shift;
-	t &= MEMCTRL_SRS_MASK;
-	info->amap.window_size = flash_sizes[t];
+	if (pdata)
+		info->amap.window_size = pdata->window_size;
+
+	if (info->amap.window_size == 0) {
+		/* get memory window size */
+		t = SW_READ_REG(MEMCTRL) >> fdesc->srs_shift;
+		t &= MEMCTRL_SRS_MASK;
+		info->amap.window_size = flash_sizes[t];
+	}
+
 	if (info->amap.window_size == 0) {
-		MAP_ERR(map, "invalid flash size detected\n");
+		MAP_ERR(map, "unable to determine window size\n");
 		goto err_out;
 	}