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| author | Boris Brezillon <boris.brezillon@free-electrons.com> | 2018-01-09 09:50:34 +0100 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@free-electrons.com> | 2018-01-16 15:23:21 +0100 |
| commit | 24ff12922278573b1e4c54b4898ab7a3c64be960 (patch) | |
| tree | 530fb669aac994de12e307cf92e83ffb21ef1c88 /drivers/mtd/mtdpart.c | |
| parent | d020fc8e5089dd6c60b1638030e0046dffa0fdbc (diff) | |
| download | linux-24ff12922278573b1e4c54b4898ab7a3c64be960.tar.bz2 | |
mtd: Fallback to ->_read/write_oob() when ->_read/write() is missing
Some MTD sublayers/drivers are implementing ->_read/write_oob() and
provide dummy wrappers for their ->_read/write() implementations.
Let the core handle this case instead of duplicating the logic.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Brian Norris <computersforpeace@gmail.com>
Reviewed-by: Miquel Raynal <miquel.raynal@free-electrons.com>
Tested-by: Ladislav Michl <ladis@linux-mips.org>
Diffstat (limited to 'drivers/mtd/mtdpart.c')
| -rw-r--r-- | drivers/mtd/mtdpart.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index 79bf1f61c7a0..dd28cb0de2c8 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -437,8 +437,10 @@ static struct mtd_part *allocate_partition(struct mtd_info *parent, parent->dev.parent; slave->mtd.dev.of_node = part->of_node; - slave->mtd._read = part_read; - slave->mtd._write = part_write; + if (parent->_read) + slave->mtd._read = part_read; + if (parent->_write) + slave->mtd._write = part_write; if (parent->_panic_write) slave->mtd._panic_write = part_panic_write; |