The driver can match only via the DT table so the table should be always used and the of_match_ptr does not have any sense (this also allows ACPI matching via PRP0001, even though it is not relevant here). drivers/spi/spi-st-ssc4.c:439:34: error: ‘stm_spi_match’ defined but not used [-Werror=unused-const-variable=] Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> --- drivers/spi/spi-st-ssc4.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/spi-st-ssc4.c b/drivers/spi/spi-st-ssc4.c index 9141f19c7f8e..3fe266c336ab 100644 --- a/drivers/spi/spi-st-ssc4.c +++ b/drivers/spi/spi-st-ssc4.c @@ -446,7 +446,7 @@ static struct platform_driver spi_st_driver = { .driver = { .name = "spi-st", .pm = &spi_st_pm, - .of_match_table = of_match_ptr(stm_spi_match), + .of_match_table = stm_spi_match, }, .probe = spi_st_probe, .remove_new = spi_st_remove, -- 2.34.1