linux-kernel - Re: [PATCH] rtc: davinci: remove incorrect reference to probe function

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Date:	Sun, 18 Oct 2015 02:15:50 +0200
From:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Alessandro Zummo <a.zummo@...ertech.it>,
	rtc-linux@...glegroups.com, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, Sekhar Nori <nsekhar@...com>,
	Kevin Hilman <khilman@...prootsystems.com>,
	Miguel Aguilar <miguel.aguilar@...gerun.com>
Subject: Re: [PATCH] rtc: davinci: remove incorrect reference to probe
 function

On 12/10/2015 at 15:14:05 +0200, Arnd Bergmann wrote :
> The davinci rtc driver uses the module_platform_driver_probe()
> helper to call the probe function and mark it as __init, but
> it also puts a reference into its davinci_rtc_driver function.
> 
> This will crash if we ever get a deferred probe and the probe
> function is called again after the init section has been removed.
> kbuild warns about this:
> 
> WARNING: vmlinux.o(.data+0x1aa2b4): Section mismatch in reference from the variable davinci_rtc_driver to the function .init.text:davinci_rtc_probe()
> The variable davinci_rtc_driver references
> the function __init davinci_rtc_probe()
> 
> This patch removes the .probe callback from the platform driver,
> which avoids those problems.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
Applied, thanks.

-- 
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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