From: Thierry Reding <treding@xxxxxxxxxx> The usb_get_maximum_speed() function is part of the usb-common module, so enable it by selecting the corresponding Kconfig symbol. While at it, also make sure to depend on USB_SUPPORT because USB_PHY requires that. This can lead to Kconfig conflicts if USB_SUPPORT is not enabled while attempting to enable PHY_TEGRA_XUSB. Reported-by: kbuild test robot <lkp@xxxxxxxxx> Suggested-by: Nathan Chancellor <natechancellor@xxxxxxxxx> Signed-off-by: Thierry Reding <treding@xxxxxxxxxx> --- Hi Greg, sending this directly to you since it fixes a build issue introduced in the pull request that you merged last week, so it needs to be applied on top of that. Thierry drivers/phy/tegra/Kconfig | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/phy/tegra/Kconfig b/drivers/phy/tegra/Kconfig index a208aca4ba7b..c591c958f1eb 100644 --- a/drivers/phy/tegra/Kconfig +++ b/drivers/phy/tegra/Kconfig @@ -1,7 +1,8 @@ # SPDX-License-Identifier: GPL-2.0-only config PHY_TEGRA_XUSB tristate "NVIDIA Tegra XUSB pad controller driver" - depends on ARCH_TEGRA + depends on ARCH_TEGRA && USB_SUPPORT + select USB_COMMON select USB_CONN_GPIO select USB_PHY help -- 2.24.1