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Message-ID: <34f22420-ec6b-438e-9edb-1aa7a837eb98@gmail.com>
Date: Sat, 5 Oct 2024 20:21:06 +0200
From: Javier Carrasco <javier.carrasco.cruz@...il.com>
To: Jonathan Cameron <jic23@...nel.org>
Cc: Lars-Peter Clausen <lars@...afoo.de>,
 Matti Vaittinen <mazziesaccount@...il.com>,
 Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
 David Lechner <dlechner@...libre.com>, Nuno Sa <nuno.sa@...log.com>,
 Dan Murphy <dmurphy@...com>, Sean Nyekjaer <sean@...nix.com>,
 Leonard Göhrs <l.goehrs@...gutronix.de>,
 Mihail Chindris <mihail.chindris@...log.com>,
 Alexandru Ardelean <ardeleanalex@...il.com>,
 Gustavo Silva <gustavograzs@...il.com>, Shoji Keita <awaittrot@...k.jp>,
 Andrey Skvortsov <andrej.skvortzov@...il.com>,
 Dalton Durst <dalton@...orts.com>, Icenowy Zheng <icenowy@...c.io>,
 Andreas Klinger <ak@...klinger.de>,
 Jonathan Cameron <Jonathan.Cameron@...wei.com>, linux-iio@...r.kernel.org,
 linux-kernel@...r.kernel.org, Ondrej Jirman <megi@....cz>
Subject: Re: [PATCH 04/13] iio: adc: ti-ads8688: add missing select
 IIO_(TRIGGERED_)BUFFER in Kconfig

On 05/10/2024 19:40, Jonathan Cameron wrote:
> On Thu, 03 Oct 2024 23:04:50 +0200
> Javier Carrasco <javier.carrasco.cruz@...il.com> wrote:
> 
>> This driver makes use of triggered buffers, but does not select the
>> required modules.
>>
>> Fixes: 2a86487786b5 ("iio: adc: ti-ads8688: add trigger and buffer support")
>> Add the missing 'select IIO_BUFFER' and 'select IIO_TRIGGERED_BUFFER'.
> Fixes tag must be part of the tag block.
> 
> Also this one looks to be a false positive. The driver includes
> buffer.h but doesn't actually have buffered support.
> 

Are you sure? These are the errors I get when I compile the ti-ads8688.c:

ld: drivers/iio/adc/ti-ads8688.o: in function `ads8688_probe':
ti-ads8688.c:(.text+0x1cf): undefined reference to
`devm_iio_triggered_buffer_setup_ext'
ld: drivers/iio/adc/ti-ads8688.o: in function `ads8688_trigger_handler':
ti-ads8688.c:(.text+0x3be): undefined reference to `iio_push_to_buffers'
ld: ti-ads8688.c:(.text+0x3c9): undefined reference to
`iio_trigger_notify_done'
make[2]: *** [scripts/Makefile.vmlinux:34: vmlinux] Error 1
make[1]: *** [/home/jc/pw/linux/linux-next/Makefile:1173: vmlinux] Error 2
make: *** [Makefile:224: __sub-make] Error 2

And I see the offending functions in its code. Am I missing something
here or are we talking about different drivers?

>>
>> Signed-off-by: Javier Carrasco <javier.carrasco.cruz@...il.com>
>> ---
>>  drivers/iio/adc/Kconfig | 2 ++
>>  1 file changed, 2 insertions(+)
>>
>> diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
>> index 45872a4e2acf..e6be1f1ec79f 100644
>> --- a/drivers/iio/adc/Kconfig
>> +++ b/drivers/iio/adc/Kconfig
>> @@ -1483,6 +1483,8 @@ config TI_ADS8344
>>  config TI_ADS8688
>>  	tristate "Texas Instruments ADS8688"
>>  	depends on SPI
>> +	select IIO_BUFFER
>> +	select IIO_TRIGGERED_BUFFER
>>  	help
>>  	  If you say yes here you get support for Texas Instruments ADS8684 and
>>  	  and ADS8688 ADC chips
>>
> 


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