This is a note to let you know that I've just added the patch titled
pinctrl: adi2: Fix Kconfig build problem
to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: pinctrl-adi2-fix-kconfig-build-problem.patch and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From foo@baz Mon Dec 18 14:47:43 CET 2017
From: Linus Walleij linus.walleij@linaro.org Date: Wed, 11 Oct 2017 11:57:15 +0200 Subject: pinctrl: adi2: Fix Kconfig build problem
From: Linus Walleij linus.walleij@linaro.org
[ Upstream commit 1c363531dd814dc4fe10865722bf6b0f72ce4673 ]
The build robot is complaining on Blackfin:
drivers/pinctrl/pinctrl-adi2.c: In function 'port_setup':
drivers/pinctrl/pinctrl-adi2.c:221:21: error: dereferencing
pointer to incomplete type 'struct gpio_port_t' writew(readw(®s->port_fer) & ~BIT(offset), ^~ drivers/pinctrl/pinctrl-adi2.c: In function 'adi_gpio_ack_irq':
drivers/pinctrl/pinctrl-adi2.c:266:18: error: dereferencing
pointer to incomplete type 'struct bfin_pint_regs' if (readl(®s->invert_set) & pintbit) ^~ It seems the driver need to include <asm/gpio.h> and <asm/irq.h> to compile.
The Blackfin architecture was re-defining the Kconfig PINCTRL symbol which is not OK, so replaced this with PINCTRL_BLACKFIN_ADI2 which selects PINCTRL and PINCTRL_ADI2 just like most arches do.
Further, the old GPIO driver symbol GPIO_ADI was possible to select at the same time as selecting PINCTRL. This was not working because the arch-local <asm/gpio.h> header contains an explicit #ifndef PINCTRL clause making compilation break if you combine them. The same is true for DEBUG_MMRS.
Make sure the ADI2 pinctrl driver is not selected at the same time as the old GPIO implementation. (This should be converted to use gpiolib or pincontrol and move to drivers/...) Also make sure the old GPIO_ADI driver or DEBUG_MMRS is not selected at the same time as the new PINCTRL implementation, and only make PINCTRL_ADI2 selectable for the Blackfin families that actually have it.
This way it is still possible to add e.g. I2C-based pin control expanders on the Blackfin.
Cc: Steven Miao realmz6@gmail.com Cc: Huanhuan Feng huanhuan.feng@analog.com Signed-off-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/blackfin/Kconfig | 7 +++++-- arch/blackfin/Kconfig.debug | 1 + drivers/pinctrl/Kconfig | 3 ++- 3 files changed, 8 insertions(+), 3 deletions(-)
--- a/arch/blackfin/Kconfig +++ b/arch/blackfin/Kconfig @@ -318,11 +318,14 @@ config BF53x
config GPIO_ADI def_bool y + depends on !PINCTRL depends on (BF51x || BF52x || BF53x || BF538 || BF539 || BF561)
-config PINCTRL +config PINCTRL_BLACKFIN_ADI2 def_bool y - depends on BF54x || BF60x + depends on (BF54x || BF60x) + select PINCTRL + select PINCTRL_ADI2
config MEM_MT48LC64M4A2FB_7E bool --- a/arch/blackfin/Kconfig.debug +++ b/arch/blackfin/Kconfig.debug @@ -17,6 +17,7 @@ config DEBUG_VERBOSE
config DEBUG_MMRS tristate "Generate Blackfin MMR tree" + depends on !PINCTRL select DEBUG_FS help Create a tree of Blackfin MMRs via the debugfs tree. If --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -26,7 +26,8 @@ config DEBUG_PINCTRL
config PINCTRL_ADI2 bool "ADI pin controller driver" - depends on BLACKFIN + depends on (BF54x || BF60x) + depends on !GPIO_ADI select PINMUX select IRQ_DOMAIN help
Patches currently in stable-queue which might be from linus.walleij@linaro.org are
queue-4.4/pinctrl-adi2-fix-kconfig-build-problem.patch