On Tue, 11 Sep 2018, Nicolas Ferre wrote:
> On 11/09/2018 at 10:25, Lee Jones wrote:
> > On Tue, 11 Sep 2018, Stephen Rothwell wrote:
> >
> > > Hi Greg,
> > >
> > > After merging the tty tree, today's linux-next build (arm
> > > multi_v7_defconfig) failed like this:
> > >
> > > drivers/mfd/at91-usart.c:51:34: error: array type has incomplete element type 'struct of_device_id'
> > > static const struct of_device_id at91_usart_mode_of_match[] = {
> > > ^~~~~~~~~~~~~~~~~~~~~~~~
> > > drivers/mfd/at91-usart.c:52:4: error: field name not in record or union initializer
> > > { .compatible = "atmel,at91rm9200-usart" },
> > > ^
> > > drivers/mfd/at91-usart.c:52:4: note: (near initialization for 'at91_usart_mode_of_match')
> > > drivers/mfd/at91-usart.c:53:4: error: field name not in record or union initializer
> > > { .compatible = "atmel,at91sam9260-usart" },
> > > ^
> > > drivers/mfd/at91-usart.c:53:4: note: (near initialization for 'at91_usart_mode_of_match')
> > > drivers/mfd/at91-usart.c:51:34: warning: 'at91_usart_mode_of_match' defined but not used [-Wunused-variable]
> > > static const struct of_device_id at91_usart_mode_of_match[] = {
> > > ^~~~~~~~~~~~~~~~~~~~~~~~
> > >
> > > Caused by commit
> > >
> > > 7d3aa342cef7 ("mfd: at91-usart: Add MFD driver for USART")
> > >
> > > Forgot to include <linux/mod_devicetable.h>?
> >
> > Looks like a missing Device Tree header <linux/of.h>.
> >
> > Will chase this today and follow up with another PR.
>
> Hi all,
>
> Actually it is due to the missing of <linux/mod_devicetable.h> as Stephen
> suggested. It is due to the patch ac3167257b9f ("headers: separate
> linux/mod_devicetable.h from linux/platform_device.h") merged in v4.19-rc1.
Since this set uses Device Tree, it really should include the of.h.
This solves the issue reported above.
I will fix-up and re-send the pull-request.
> because linux/platform_device.h was included by linux/mfd/core.h that is
> present in this driver. This is why the issue was not identified beforehand.
>
> I'm building a tiny patch to address this right now.
>
> Thanks for your help. Best regards,
--
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
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