diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2023-08-30 18:00:34 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-10-25 13:03:13 +0300 |
| commit | 73915d26b4747523b8b30b6f145323f410f903bc (patch) | |
| tree | 48513d38b6264ebceeae4431ca4958182e96bfd6 /drivers/mtd | |
| parent | 578687563e71f50d85df480faecc83c0479b448d (diff) | |
| download | linux-73915d26b4747523b8b30b6f145323f410f903bc.tar.xz | |
mtd: physmap-core: Restore map_rom fallback
commit 6792b7fce610bcd1cf3e07af3607fe7e2c38c1d8 upstream.
When the exact mapping type driver was not available, the old
physmap_of_core driver fell back to mapping the region as ROM.
Unfortunately this feature was lost when the DT and pdata cases were
merged. Revive this useful feature.
Fixes: 642b1e8dbed7bbbf ("mtd: maps: Merge physmap_of.c into physmap-core.c")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/550e8c8c1da4c4baeb3d71ff79b14a18d4194f9e.1693407371.git.geert+renesas@glider.be
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/maps/physmap-core.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/mtd/maps/physmap-core.c b/drivers/mtd/maps/physmap-core.c index c73854da5136..19dad5a23f94 100644 --- a/drivers/mtd/maps/physmap-core.c +++ b/drivers/mtd/maps/physmap-core.c @@ -552,6 +552,17 @@ static int physmap_flash_probe(struct platform_device *dev) if (info->probe_type) { info->mtds[i] = do_map_probe(info->probe_type, &info->maps[i]); + + /* Fall back to mapping region as ROM */ + if (!info->mtds[i] && IS_ENABLED(CONFIG_MTD_ROM) && + strcmp(info->probe_type, "map_rom")) { + dev_warn(&dev->dev, + "map_probe() failed for type %s\n", + info->probe_type); + + info->mtds[i] = do_map_probe("map_rom", + &info->maps[i]); + } } else { int j; |