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authorRichard Genoud <richard.genoud@gmail.com>2012-07-10 18:23:40 +0200
committerArtem Bityutskiy <artem.bityutskiy@linux.intel.com>2012-09-04 09:38:58 +0300
commit62082e56cbb807cb325a8968f35dbd922432eb48 (patch)
tree7774c4a45743e1b7bbefb1c7363c9af3185a51c5 /drivers/mtd/mtdpart.c
parent5dee4674c8dd4398f4806aae153888319c7e2be9 (diff)
mtd: mtdparts: introduce mtd_get_device_size
'mtd_get_device_size()' returns the size of the whole MTD device, that is the mtd_info master size. This will be used by UBI to calculate the maximum number of bad blocks (MBB) on a MTD device. Artem: amended the patch a bit. Signed-off-by: Richard Genoud <richard.genoud@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Diffstat (limited to 'drivers/mtd/mtdpart.c')
-rw-r--r--drivers/mtd/mtdpart.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index 85005846f30..3a49e6de5e6 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -760,3 +760,13 @@ int mtd_is_partition(const struct mtd_info *mtd)
return ispart;
}
EXPORT_SYMBOL_GPL(mtd_is_partition);
+
+/* Returns the size of the entire flash chip */
+uint64_t mtd_get_device_size(const struct mtd_info *mtd)
+{
+ if (!mtd_is_partition(mtd))
+ return mtd->size;
+
+ return PART(mtd)->master->size;
+}
+EXPORT_SYMBOL_GPL(mtd_get_device_size);