diff options
| author |   Miquel Raynal <miquel.raynal@bootlin.com> | 2022-01-27 12:06:31 +0100 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2022-01-31 17:18:03 +0100 |
| commit | 3f26d1bf90ba9bf420e49ec9cdbe13d15c0df7cd (patch) | |
| tree | 5cf5dec3b435f9b286b3c862c351cc46dfb5c98e /drivers/mtd/devices/mchp48l640.c | |
| parent | mtd_blkdevs: avoid soft lockups with some mtd/spi devices (diff) | |
| download | linux-dev-3f26d1bf90ba9bf420e49ec9cdbe13d15c0df7cd.tar.xz linux-dev-3f26d1bf90ba9bf420e49ec9cdbe13d15c0df7cd.zip | |
mtd: Fix misuses of of_match_ptr()
of_match_ptr() either expands to NULL if !CONFIG_OF, or is transparent
otherwise. There are several drivers using this macro which keep their
of_device_id array enclosed within an #ifdef CONFIG_OF check, these are
considered fine. However, When misused, the of_device_id array pointed
by this macro will produce a warning because it is finally unused when
compiled without OF support.
A number of fixes are possible:
- Always depend on CONFIG_OF, but this will not always work and may
break boards.
- Enclose the compatible array by #ifdef's, this may save a bit of
memory but will reduce build coverage.
- Tell the compiler the array may be unused, if this can be avoided,
let's not do this.
- Just drop the macro, setting the of_device_id array for a non OF
enabled platform is not an issue, it will just be unused.
The latter solution seems the more appropriate, so let's use it.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Paul Cercueil <paul@crapouillou.net>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Pratyush Yadav <p.yadav@ti.com>
Link: https://lore.kernel.org/linux-mtd/20220127110631.1064705-1-miquel.raynal@bootlin.com
Diffstat (limited to '')
| -rw-r--r-- | drivers/mtd/devices/mchp48l640.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mtd/devices/mchp48l640.c b/drivers/mtd/devices/mchp48l640.c index 231a10790196..4ec505b3f4a6 100644 --- a/drivers/mtd/devices/mchp48l640.c +++ b/drivers/mtd/devices/mchp48l640.c @@ -362,7 +362,7 @@ MODULE_DEVICE_TABLE(of, mchp48l640_of_table); static struct spi_driver mchp48l640_driver = { .driver = { .name = "mchp48l640", - .of_match_table = of_match_ptr(mchp48l640_of_table), + .of_match_table = mchp48l640_of_table, }, .probe = mchp48l640_probe, .remove = mchp48l640_remove, |