diff options
| author |   Josh Wu <josh.wu@atmel.com> | 2013-08-05 19:14:38 +0800 |
|---|---|---|
| committer |   David Woodhouse <David.Woodhouse@intel.com> | 2013-08-05 21:12:32 +0100 |
| commit | e79265ba6bdb31437bd4c3e7911950f9d1262a07 (patch) | |
| tree | cb4c9c88879a11dec1bc840d7eeb223353e19d35 /drivers/mtd/ofpart.c | |
| parent | mtd: atmel_nand: enable Nand Flash Controller (NFC) write via sram (diff) | |
| download | linux-dev-e79265ba6bdb31437bd4c3e7911950f9d1262a07.tar.xz linux-dev-e79265ba6bdb31437bd4c3e7911950f9d1262a07.zip | |
mtd: ofpart: add compatible check for child nodes
In case that the nand device will support some features like Nand Flash
Controller, we want to make the sub feature as a sub node of nand device.
Use such organization it is easy to enable/disable feature, also it is back
compatible and more readable.
If the sub-node has a compatible property then it is a driver not partition.
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Acked-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
[ added a missing newline -Brian ]
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd/ofpart.c')
| -rw-r--r-- | drivers/mtd/ofpart.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/mtd/ofpart.c b/drivers/mtd/ofpart.c index 553d6d6d5603..7843a4491217 100644 --- a/drivers/mtd/ofpart.c +++ b/drivers/mtd/ofpart.c @@ -20,6 +20,11 @@ #include <linux/slab.h> #include <linux/mtd/partitions.h> +static bool node_has_compatible(struct device_node *pp) +{ + return of_get_property(pp, "compatible", NULL); +} + static int parse_ofpart_partitions(struct mtd_info *master, struct mtd_partition **pparts, struct mtd_part_parser_data *data) @@ -40,8 +45,12 @@ static int parse_ofpart_partitions(struct mtd_info *master, /* First count the subnodes */ pp = NULL; nr_parts = 0; - while ((pp = of_get_next_child(node, pp))) + while ((pp = of_get_next_child(node, pp))) { + if (node_has_compatible(pp)) + continue; + nr_parts++; + } if (nr_parts == 0) return 0; @@ -57,6 +66,9 @@ static int parse_ofpart_partitions(struct mtd_info *master, int len; int a_cells, s_cells; + if (node_has_compatible(pp)) + continue; + reg = of_get_property(pp, "reg", &len); if (!reg) { nr_parts--; |