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 might not be relevant here). drivers/gpio/gpio-altera.c:324:34: error: ‘altera_gpio_of_match’ defined but not used [-Werror=unused-const-variable=] Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> --- drivers/gpio/gpio-altera.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpio/gpio-altera.c b/drivers/gpio/gpio-altera.c index 99e137f8097e..c9158b5230f6 100644 --- a/drivers/gpio/gpio-altera.c +++ b/drivers/gpio/gpio-altera.c @@ -330,7 +330,7 @@ MODULE_DEVICE_TABLE(of, altera_gpio_of_match); static struct platform_driver altera_gpio_driver = { .driver = { .name = "altera_gpio", - .of_match_table = of_match_ptr(altera_gpio_of_match), + .of_match_table = altera_gpio_of_match, }, .probe = altera_gpio_probe, .remove = altera_gpio_remove, -- 2.34.1