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authorSascha Hauer <s.hauer@pengutronix.de>2014-06-10 13:55:20 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2014-06-10 13:55:23 +0200
commit70579ca94f0aa76cc0ec2f56a8ec5df8739d0d38 (patch)
treec6ec572d5d208b5629d209673457057f6b776728 /drivers/mtd/partition.c
parent02fed023e12bcb2ad273dba54cd1a6c163aada1d (diff)
downloadbarebox-70579ca94f0aa76cc0ec2f56a8ec5df8739d0d38.tar.gz
barebox-70579ca94f0aa76cc0ec2f56a8ec5df8739d0d38.tar.xz
mtd: partition: implement lock/unlock
CFI Nor flashes need lock/unlock which is not implemented for partitions. Fix this. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/mtd/partition.c')
-rw-r--r--drivers/mtd/partition.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/mtd/partition.c b/drivers/mtd/partition.c
index 52d0c94a7a..5c0d46fdad 100644
--- a/drivers/mtd/partition.c
+++ b/drivers/mtd/partition.c
@@ -49,6 +49,32 @@ static int mtd_part_erase(struct mtd_info *mtd, struct erase_info *instr)
return ret;
}
+static int mtd_part_lock(struct mtd_info *mtd, loff_t offset, size_t len)
+{
+ if (!(mtd->flags & MTD_WRITEABLE))
+ return -EROFS;
+
+ if (offset + len > mtd->size)
+ return -EINVAL;
+
+ offset += mtd->master_offset;
+
+ return mtd->master->lock(mtd->master, offset, len);
+}
+
+static int mtd_part_unlock(struct mtd_info *mtd, loff_t offset, size_t len)
+{
+ if (!(mtd->flags & MTD_WRITEABLE))
+ return -EROFS;
+
+ if (offset + len > mtd->size)
+ return -EINVAL;
+
+ offset += mtd->master_offset;
+
+ return mtd->master->unlock(mtd->master, offset, len);
+}
+
static int mtd_part_block_isbad(struct mtd_info *mtd, loff_t ofs)
{
if (ofs >= mtd->size)
@@ -122,6 +148,8 @@ struct mtd_info *mtd_add_partition(struct mtd_info *mtd, off_t offset,
if (IS_ENABLED(CONFIG_MTD_WRITE)) {
part->write = mtd_part_write;
part->erase = mtd_part_erase;
+ part->lock = mtd_part_lock;
+ part->unlock = mtd_part_unlock;
part->block_markbad = mtd->block_markbad ? mtd_part_block_markbad : NULL;
}