linux-kernel - Re: [PATCH v2 03/10] Clocksource: add nuc970 clocksource driver

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Message-ID: <20160721125224.GA10047@linaro.org>
Date:	Thu, 21 Jul 2016 14:52:24 +0200
From:	Daniel Lezcano <daniel.lezcano@...aro.org>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-arm-kernel@...ts.infradead.org, Wan Zongshun <vw@...mu.org>,
	devicetree@...r.kernel.org, jason@...edaemon.net,
	Wan Zongshun <mcuos.com@...il.com>,
	linux-kernel@...r.kernel.org, Russell King <linux@...linux.org.uk>,
	p.zabel@...gutronix.de, Thomas Gleixner <tglx@...utronix.de>,
	linux-clk@...r.kernel.org
Subject: Re: [PATCH v2 03/10] Clocksource: add nuc970 clocksource driver

On Tue, Jul 12, 2016 at 10:28:35AM +0200, Arnd Bergmann wrote:

[ ... ]

> > > Also the init function has changed its return type in linux-next:
> > >
> > >> +static void __init nuc970_timer_of_init(struct device_node *node)
> > >
> > > This now needs to return an error code or we get:
> > >
> > > ../include/linux/of.h:1004:20: error: comparison of distinct pointer types lacks a cast [-Werror]
> > >          .data = (fn == (fn_type)NULL) ? fn : fn  }
> > >
> > > Daniel Lezcano seems to have implemented a migration strategy, but I
> > > can't see what you are supposed to do here, since the
> > > CLOCKSOURCE_OF_DECLARE_RET macro is no longer part of linux-next.
> > 
> > Wait for Daniel's comments? or what should I do now?
> 
> Yes, let's see what he says. I guess from the timing, this will probably
> have to wait for linux-4.9 anyway, and then we have no problem because the
> API change will make it into 4.8.

CLOCKSOURCE_OF_DECLARE_RET was renamed back to CLOCKSOURCE_OF_DECLARE but it 
expects now an init function returning an 'int'.

These changes are now in tip/timers/core, so in linux-next.