linux-kernel - Re: aarch64 iio build error [PATCH]

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Date:   Fri, 28 Aug 2020 23:56:09 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Dave Airlie <airlied@...il.com>, jonathan.cameron@...wei.com,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: aarch64 iio build error [PATCH]

On 8/24/20 12:39 PM, Dave Airlie wrote:
> Hi Jonahtan,
> 
> Since rc1 my aarch64 builds have been failing
> 
>   MODPOST Module.symvers
> ERROR: modpost: "devm_iio_triggered_buffer_setup"
> [drivers/iio/adc/rockchip_saradc.ko] undefined!
> ERROR: modpost: "iio_trigger_notify_done"
> [drivers/iio/adc/rockchip_saradc.ko] undefined!
> ERROR: modpost: "iio_push_to_buffers"
> [drivers/iio/adc/rockchip_saradc.ko] undefined!
> make[2]: *** [/home/airlied/devel/kernel/dim/src/scripts/Makefile.modpost:111:
> Module.symvers] Error
> 
> Attached config.
> 
> Dave.

I haven't see any fixes for this, although I could have easily
missed a patch.

The patch below should fix these build errors.

---
From: Randy Dunlap <rdunlap@...radead.org>

Fix build errors in iio/rockchip_saradc by adding selects
to drivers/iio/adc/Kconfig.

Fixes these build errors:

ERROR: modpost: "devm_iio_triggered_buffer_setup"
[drivers/iio/adc/rockchip_saradc.ko] undefined!
ERROR: modpost: "iio_trigger_notify_done"
[drivers/iio/adc/rockchip_saradc.ko] undefined!
ERROR: modpost: "iio_push_to_buffers"
[drivers/iio/adc/rockchip_saradc.ko] undefined!

Reported-by: Dave Airlie <airlied@...il.com>
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Cc: jonathan.cameron@...wei.com
---
 drivers/iio/adc/Kconfig |    4 ++++
 1 file changed, 4 insertions(+)

--- linux-next-20200825.orig/drivers/iio/adc/Kconfig
+++ linux-next-20200825/drivers/iio/adc/Kconfig
@@ -865,6 +865,10 @@ config ROCKCHIP_SARADC
 	tristate "Rockchip SARADC driver"
 	depends on ARCH_ROCKCHIP || (ARM && COMPILE_TEST)
 	depends on RESET_CONTROLLER
+	select IIO_BUFFER
+	select IIO_TRIGGER
+	select IIO_TRIGGERED_BUFFER
+	select IIO_TRIGGERED_EVENT
 	help
 	  Say yes here to build support for the SARADC found in SoCs from
 	  Rockchip.