[3.16.y-ckt stable] Patch "ARM: sunxi: Have ARCH_SUNXI select RESET_CONTROLLER for clock driver usage" has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    ARM: sunxi: Have ARCH_SUNXI select RESET_CONTROLLER for clock driver usage

to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.16.y-queue

This patch is scheduled to be released in version 3.16.7-ckt10.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From 6dc11ec87ded8c5ce214629e018de708258d2744 Mon Sep 17 00:00:00 2001
From: Chen-Yu Tsai <wens at csie.org>
Date: Mon, 9 Feb 2015 18:23:20 +0800
Subject: ARM: sunxi: Have ARCH_SUNXI select RESET_CONTROLLER for clock driver
 usage

commit fdc0074c5fc8c7adb8186cbb123fe2082d9bd05f upstream.

As the sunxi usb clocks all contain a reset controller, it is not
possible to build the sunxi clock driver without RESET_CONTROLLER
enabled. Doing so results in an undefined symbol error:

    drivers/built-in.o: In function `sunxi_gates_clk_setup':
    linux/drivers/clk/sunxi/clk-sunxi.c:1071: undefined reference to
	`reset_controller_register'

This is possible if building a minimal kernel without PHY_SUN4I_USB.

The dependency issue is made visible at compile time instead of
link time by the new A80 mmc clocks, which also use a reset control
itself.

This patch makes ARCH_SUNXI select ARCH_HAS_RESET_CONTROLLER and
RESET_CONTROLLER.

Fixes: 559482d1f950 ARM: sunxi: Split the various SoCs support in Kconfig
Reported-by: Lourens Rozema <ik at lourensrozema.nl>
Acked-by: Arnd Bergmann <arnd at arndb.de>
Signed-off-by: Chen-Yu Tsai <wens at csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard at free-electrons.com>
[ luis: backported to 3.16:
  - dropped changes to sun8i and sun9i, unsupported on 3.16 kernel ]
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 arch/arm/mach-sunxi/Kconfig | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
index 0fbd4f156bfa..b59e17748882 100644
--- a/arch/arm/mach-sunxi/Kconfig
+++ b/arch/arm/mach-sunxi/Kconfig
@@ -1,11 +1,13 @@
 menuconfig ARCH_SUNXI
 	bool "Allwinner SoCs" if ARCH_MULTI_V7
 	select ARCH_REQUIRE_GPIOLIB
+	select ARCH_HAS_RESET_CONTROLLER
 	select CLKSRC_MMIO
 	select GENERIC_IRQ_CHIP
 	select PINCTRL
 	select PINCTRL_SUNXI
 	select SUN4I_TIMER
+	select RESET_CONTROLLER

 if ARCH_SUNXI

@@ -21,10 +23,8 @@ config MACH_SUN5I
 config MACH_SUN6I
 	bool "Allwinner A31 (sun6i) SoCs support"
 	default ARCH_SUNXI
-	select ARCH_HAS_RESET_CONTROLLER
 	select ARM_GIC
 	select MFD_SUN6I_PRCM
-	select RESET_CONTROLLER
 	select SUN5I_HSTIMER

 config MACH_SUN7I