usb: common: rework CONFIG_USB_COMMON logic

The phy-am335x driver selects 'USB_COMMON', but all other drivers
use 'depends on' for that symbol, and it depends on USB || USB_GADGET
itself, which causes a Kconfig warning:

warning: (AM335X_PHY_USB) selects USB_COMMON which has unmet direct dependencies (USB_SUPPORT && (USB || USB_GADGET))

As suggested by Felipe Balbi, this turns the logic around, and makes
'USB_COMMON' selected by everything else that needs it, so we can
remove the dependencies.

Fixes: 59f042f644c5 ("usb: phy: phy-am335x: bypass first VBUS sensing for host-only mode")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Felipe Balbi <balbi@kernel.org>
Reviewed-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index 26566db..e92b97c 100644 (file)
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -250,7 +250,8 @@ config PHY_SUN9I_USB
        tristate "Allwinner sun9i SoC USB PHY driver"
        depends on ARCH_SUNXI && HAS_IOMEM && OF
        depends on RESET_CONTROLLER
-       depends on USB_COMMON
+       depends on USB_SUPPORT
+       select USB_COMMON
        select GENERIC_PHY
        help
          Enable this to support the transceiver that is part of Allwinner

diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
index 8ed451d..8689dcb 100644 (file)
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -31,8 +31,6 @@ if USB_SUPPORT
 
 config USB_COMMON
        tristate
-       default y
-       depends on USB || USB_GADGET
 
 config USB_ARCH_HAS_HCD
        def_bool y
@@ -41,6 +39,7 @@ config USB_ARCH_HAS_HCD
 config USB
        tristate "Support for Host-side USB"
        depends on USB_ARCH_HAS_HCD
+       select USB_COMMON
        select NLS  # for UTF-8 strings
        ---help---
          Universal Serial Bus (USB) is a specification for a serial bus

diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index af5d922..2057add 100644 (file)
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -15,6 +15,7 @@
 
 menuconfig USB_GADGET
        tristate "USB Gadget Support"
+       select USB_COMMON
        select NLS
        help
           USB is a master/slave protocol, organized with one master