Guenter, Thanks for catching this!
> Fix:
>
> drivers/i2c/busses/i2c-jz4780.c: In function 'jz4780_i2c_readw':
> drivers/i2c/busses/i2c-jz4780.c:181:2: error:
> implicit declaration of function 'readw'
> drivers/i2c/busses/i2c-jz4780.c: In function 'jz4780_i2c_writew':
> drivers/i2c/busses/i2c-jz4780.c:187:2: error:
> implicit declaration of function 'writew'
>
> seen with sparc64:allmodconfig and m68k:allmodconfig.
>
> The driver depends on HAS_IOMEM, and must include linux/io.h.
>
> Fixes: ba92222ed63a ("i2c: jz4780: Add i2c bus controller driver
> for Ingenic JZ4780")
> Cc: Zubair Lutfullah Kakakhel <zubair.kakak...@imgtec.com>
> Signed-off-by: Guenter Roeck <li...@roeck-us.net>
> ---
> drivers/i2c/busses/Kconfig | 1 +
> drivers/i2c/busses/i2c-jz4780.c | 1 +
> 2 files changed, 2 insertions(+)
>
> diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
> index 2255af23b9c7..c78b6cbd1106 100644
> --- a/drivers/i2c/busses/Kconfig
> +++ b/drivers/i2c/busses/Kconfig
> @@ -586,6 +586,7 @@ config I2C_IOP3XX
> config I2C_JZ4780
> tristate "JZ4780 I2C controller interface support"
> depends on MACH_JZ4780 || COMPILE_TEST
> + depends on HAS_IOMEM
You sure? We have
menu "I2C Hardware Bus support"
depends on HAS_IOMEM
in drivers/i2c/busses/Kconfig. For me, menuconfig shows that the driver
is already depending on HAS_IOMEM.
> help
> If you say yes to this option, support will be included for the
> Ingenic JZ4780 I2C controller.
> diff --git a/drivers/i2c/busses/i2c-jz4780.c b/drivers/i2c/busses/i2c-jz4780.c
> index ce1d69324169..f2761ab2ef32 100644
> --- a/drivers/i2c/busses/i2c-jz4780.c
> +++ b/drivers/i2c/busses/i2c-jz4780.c
> @@ -21,6 +21,7 @@
> #include <linux/delay.h>
> #include <linux/errno.h>
> #include <linux/i2c.h>
> +#include <linux/io.h>
> #include <linux/init.h>
> #include <linux/interrupt.h>
> #include <linux/kernel.h>
The sorting needs to be fixed.
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