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| author | Javier Martinez Canillas <javierm@redhat.com> | 2022-05-30 17:02:46 +0300 |
|---|---|---|
| committer | Javier Martinez Canillas <javierm@redhat.com> | 2022-06-02 01:35:32 +0300 |
| commit | 01ece65132e2980ece4eca91105dfc9eed504881 (patch) | |
| tree | 390bb9b687eb7d1904ad31a84596aa446e9bf7e7 /drivers/gpu/drm/solomon | |
| parent | a9bfcb56a2ef265092a4cfcd4b9c58ddff4d3649 (diff) | |
| download | linux-01ece65132e2980ece4eca91105dfc9eed504881.tar.xz | |
drm/ssd130x: Only define a SPI device ID table when built as a module
The kernel test robot reports a compile warning due the ssd130x_spi_table
variable being defined but not used. This happen when ssd130x-spi driver
is built-in instead of being built as a module, i.e:
CC drivers/gpu/drm/solomon/ssd130x-spi.o
AR drivers/base/firmware_loader/built-in.a
AR drivers/base/built-in.a
CC kernel/trace/trace.o
drivers/gpu/drm/solomon/ssd130x-spi.c:155:35: warning: ‘ssd130x_spi_table’ defined but not used [-Wunused-const-variable=]
155 | static const struct spi_device_id ssd130x_spi_table[] = {
| ^~~~~~~~~~~~~~~~~
The driver shouldn't need a SPI device ID table and only have an OF device
ID table, but the former is needed to workaround an issue in the SPI core.
This always reports a MODALIAS of the form "spi:<device>" even for devices
registered through Device Trees.
But the table is only needed when the driver built as a module to populate
the .ko alias info. It's not needed when the driver is built-in the kernel.
Fixes: 74373977d2ca ("drm/solomon: Add SSD130x OLED displays SPI support")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220530140246.742469-1-javierm@redhat.com
Diffstat (limited to 'drivers/gpu/drm/solomon')
| -rw-r--r-- | drivers/gpu/drm/solomon/ssd130x-spi.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/solomon/ssd130x-spi.c b/drivers/gpu/drm/solomon/ssd130x-spi.c index 43722adab1f8..07802907e39a 100644 --- a/drivers/gpu/drm/solomon/ssd130x-spi.c +++ b/drivers/gpu/drm/solomon/ssd130x-spi.c @@ -143,6 +143,7 @@ static const struct of_device_id ssd130x_of_match[] = { }; MODULE_DEVICE_TABLE(of, ssd130x_of_match); +#if IS_MODULE(CONFIG_DRM_SSD130X_SPI) /* * The SPI core always reports a MODALIAS uevent of the form "spi:<dev>", even * if the device was registered via OF. This means that the module will not be @@ -160,6 +161,7 @@ static const struct spi_device_id ssd130x_spi_table[] = { { /* sentinel */ } }; MODULE_DEVICE_TABLE(spi, ssd130x_spi_table); +#endif static struct spi_driver ssd130x_spi_driver = { .driver = { |