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/usb/gadget/udc/rzv2m_usb3drd.c:120:34: error: ‘rzv2m_usb3drd_of_match’ defined but not used [-Werror=unused-const-variable=] Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> --- drivers/usb/gadget/udc/rzv2m_usb3drd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/udc/rzv2m_usb3drd.c b/drivers/usb/gadget/udc/rzv2m_usb3drd.c index 3c8bbf843038..8855d8e8d793 100644 --- a/drivers/usb/gadget/udc/rzv2m_usb3drd.c +++ b/drivers/usb/gadget/udc/rzv2m_usb3drd.c @@ -126,7 +126,7 @@ MODULE_DEVICE_TABLE(of, rzv2m_usb3drd_of_match); static struct platform_driver rzv2m_usb3drd_driver = { .driver = { .name = "rzv2m-usb3drd", - .of_match_table = of_match_ptr(rzv2m_usb3drd_of_match), + .of_match_table = rzv2m_usb3drd_of_match, }, .probe = rzv2m_usb3drd_probe, .remove = rzv2m_usb3drd_remove, -- 2.34.1