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authorEzequiel Garcia <ezequiel.garcia@free-electrons.com>2014-05-22 02:06:12 +0400
committerBrian Norris <computersforpeace@gmail.com>2014-07-09 05:38:16 +0400
commit8471bb73ba10ed6788b4f1e9b8a0f9dc6bdb05b5 (patch)
tree12fdaa370ab34c38c4057ddca0a2bcd52b5744a8 /drivers/mtd/mtdcore.c
parent990a3af0c20590954be01a95c2c3fcef9360a836 (diff)
downloadlinux-8471bb73ba10ed6788b4f1e9b8a0f9dc6bdb05b5.tar.xz
mtd: Introduce mtd_block_isreserved()
In addition to mtd_block_isbad(), which checks if a block is bad or reserved, it's needed to check if a block is reserved only (but not bad). This commit adds an MTD interface for it, in a similar fashion to mtd_block_isbad(). While here, fix mtd_block_isbad() so the out-of-bounds checking is done before the callback check. Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Tested-by: Pekon Gupta <pekon@ti.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/mtd/mtdcore.c')
-rw-r--r--drivers/mtd/mtdcore.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index 11857faa0d96..e4831b4159db 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -1043,12 +1043,22 @@ int mtd_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len)
}
EXPORT_SYMBOL_GPL(mtd_is_locked);
-int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs)
+int mtd_block_isreserved(struct mtd_info *mtd, loff_t ofs)
{
- if (!mtd->_block_isbad)
+ if (ofs < 0 || ofs > mtd->size)
+ return -EINVAL;
+ if (!mtd->_block_isreserved)
return 0;
+ return mtd->_block_isreserved(mtd, ofs);
+}
+EXPORT_SYMBOL_GPL(mtd_block_isreserved);
+
+int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs)
+{
if (ofs < 0 || ofs > mtd->size)
return -EINVAL;
+ if (!mtd->_block_isbad)
+ return 0;
return mtd->_block_isbad(mtd, ofs);
}
EXPORT_SYMBOL_GPL(mtd_block_isbad);