[RFC PATCH v2 1/4] tty: serial_mctrl_gpio: Add irqs helpers for input lines

[Richard Genoud]

2015-01-13 15:33 GMT+01:00 Janusz Użycki <j.uzycki at elproma.com.pl>:
>
> W dniu 2015-01-13 o 15:30, Richard Genoud pisze:
>
>> 2015-01-13 14:52 GMT+01:00 Janusz Użycki <j.uzycki at elproma.com.pl>:
>>>
>>> W dniu 2015-01-13 o 14:04, Richard Genoud pisze:
>>>
>>>> 2015-01-10 15:32 GMT+01:00 Janusz Uzycki <j.uzycki at elproma.com.pl>:
>>>>>
>>>>> diff --git a/drivers/tty/serial/serial_mctrl_gpio.h
>>>>> b/drivers/tty/serial/serial_mctrl_gpio.h
>>>>> index 400ba04..13ba3f4 100644
>>>>> --- a/drivers/tty/serial/serial_mctrl_gpio.h
>>>>> +++ b/drivers/tty/serial/serial_mctrl_gpio.h
>>>>> @@ -21,6 +21,7 @@
>>>>>    #include <linux/err.h>
>>>>>    #include <linux/device.h>
>>>>>    #include <linux/gpio/consumer.h>
>>>>> +#include <linux/serial_core.h>
>>>>>
>>>>>    enum mctrl_gpio_idx {
>>>>>           UART_GPIO_CTS,
>>>>> @@ -40,6 +41,13 @@ enum mctrl_gpio_idx {
>>>>>     */
>>>>>    struct mctrl_gpios;
>>>>>
>>>>> +/*
>>>>> + * Return true if gidx is GPIO line, otherwise false.
>>>>> + * It assumes that gpios is allocated and not NULL.
>>>>> + */
>>>>> +inline
>>>>> +bool mctrl_gpio_is_gpio(struct mctrl_gpios *gpios, enum mctrl_gpio_idx
>>>>> gidx);
>>>>> +
>>>>
>>>> This leads to a compile error :
>>>>     CC      drivers/tty/serial/atmel_serial.o
>>>> In file included from drivers/tty/serial/atmel_serial.c:64:0:
>>>> drivers/tty/serial/atmel_serial.c: In function
>>>> 'atmel_disable_ms.part.22':
>>>> drivers/tty/serial/serial_mctrl_gpio.h:49:6: error: inlining failed in
>>>> call to always_inline 'mctrl_gpio_is_gpio': function body not
>>>> available
>>>> drivers/tty/serial/atmel_serial.c:536:25: error: called from here
>>>> In file included from drivers/tty/serial/atmel_serial.c:64:0:
>>>> drivers/tty/serial/serial_mctrl_gpio.h:49:6: error: inlining failed in
>>>> call to always_inline 'mctrl_gpio_is_gpio': function body not
>>>> available
>>>> drivers/tty/serial/atmel_serial.c:539:25: error: called from here
>>>> In file included from drivers/tty/serial/atmel_serial.c:64:0:
>>>> drivers/tty/serial/serial_mctrl_gpio.h:49:6: error: inlining failed in
>>>> call to always_inline 'mctrl_gpio_is_gpio': function body not
>>>> available
>>>> drivers/tty/serial/atmel_serial.c:542:25: error: called from here
>>>> In file included from drivers/tty/serial/atmel_serial.c:64:0:
>>>> drivers/tty/serial/serial_mctrl_gpio.h:49:6: error: inlining failed in
>>>> call to always_inline 'mctrl_gpio_is_gpio': function body not
>>>> available
>>>> drivers/tty/serial/atmel_serial.c:545:25: error: called from here
>>>> In file included from drivers/tty/serial/atmel_serial.c:64:0:
>>>> drivers/tty/serial/atmel_serial.c: In function 'atmel_enable_ms':
>>>> drivers/tty/serial/serial_mctrl_gpio.h:49:6: error: inlining failed in
>>>> call to always_inline 'mctrl_gpio_is_gpio': function body not
>>>> available
>>>> drivers/tty/serial/atmel_serial.c:503:25: error: called from here
>>>> In file included from drivers/tty/serial/atmel_serial.c:64:0:
>>>> drivers/tty/serial/serial_mctrl_gpio.h:49:6: error: inlining failed in
>>>> call to always_inline 'mctrl_gpio_is_gpio': function body not
>>>> available
>>>> drivers/tty/serial/atmel_serial.c:506:25: error: called from here
>>>> In file included from drivers/tty/serial/atmel_serial.c:64:0:
>>>> drivers/tty/serial/serial_mctrl_gpio.h:49:6: error: inlining failed in
>>>> call to always_inline 'mctrl_gpio_is_gpio': function body not
>>>> available
>>>> drivers/tty/serial/atmel_serial.c:509:25: error: called from here
>>>> In file included from drivers/tty/serial/atmel_serial.c:64:0:
>>>> drivers/tty/serial/serial_mctrl_gpio.h:49:6: error: inlining failed in
>>>> call to always_inline 'mctrl_gpio_is_gpio': function body not
>>>> available
>>>> drivers/tty/serial/atmel_serial.c:512:25: error: called from here
>>>> make[3]: *** [drivers/tty/serial/atmel_serial.o] Error 1
>>>> make[2]: *** [drivers/tty/serial] Error 2
>>>> make[1]: *** [drivers/tty] Error 2
>>>> make: *** [drivers] Error 2
>>>
>>>
>>> Do you compile atmel_serial as module? I compiled built-in and it was
>>> fine
>>> for me.
>>> So the function should be exported like mctrl_gpio_to_gpiod() I guess.
>>> An other reason can be you have CONFIG_GPIOLIB=n ?
>>> In fact, mctrl_gpio_is_gpio() should depend on CONFIG_GPIOLIB for empty
>>> body.
>>>
>> well, I'm also compiling it built-in (I even have config_module=N)
>
>
> You have no CONFIG_GPIOLIB enabled and it is the bug in the patchset.
> Thanks.
> Janusz

Actually, I have CONFIG_GPIOLIB=y, only it doesn't appears in the defconfig.
I did:
# cp defconfig arch/arm/configs/toto_defconfig
# ARCH=arm make toto_defconfig

# grep CONFIG_GPIOLIB .config
CONFIG_GPIOLIB=y
CONFIG_GPIOLIB_IRQCHIP=y

# LANG=C ARCH=arm
CROSS_COMPILE=~/dev/LNS/buildroot-VIP/output/host/usr/bin/arm-linux-
make -j12 uImage
[...]
drivers/tty/serial/serial_mctrl_gpio.h:49:6: error: inlining failed in
call to always_inline 'mctrl_gpio_is_gpio': function body not
available
drivers/tty/serial/atmel_serial.c:536:25: error: called from here
In file included from drivers/tty/serial/atmel_serial.c:64:0: