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Groups > linux.kernel > #1244684

[PATCH] rtc: davinci: remove incorrect reference to probe function

From Arnd Bergmann <arnd@arndb.de>
Newsgroups linux.kernel
Subject [PATCH] rtc: davinci: remove incorrect reference to probe function
Date 2015-10-12 15:20 +0200
Message-ID <qiLbc-8t3-17@gated-at.bofh.it> (permalink)
Organization linux.* mail to news gateway

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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@arndb.de>

diff --git a/drivers/rtc/rtc-davinci.c b/drivers/rtc/rtc-davinci.c
index c84f46168a52..c5432bf64e1c 100644
--- a/drivers/rtc/rtc-davinci.c
+++ b/drivers/rtc/rtc-davinci.c
@@ -546,7 +546,6 @@ static int __exit davinci_rtc_remove(struct platform_device *pdev)
 }
 
 static struct platform_driver davinci_rtc_driver = {
-	.probe		= davinci_rtc_probe,
 	.remove		= __exit_p(davinci_rtc_remove),
 	.driver		= {
 		.name = "rtc_davinci",

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Thread

[PATCH] rtc: davinci: remove incorrect reference to probe function Arnd Bergmann <arnd@arndb.de> - 2015-10-12 15:20 +0200
  Re: [PATCH] rtc: davinci: remove incorrect reference to probe  function Alexandre Belloni <alexandre.belloni@free-electrons.com> - 2015-10-18 02:20 +0200

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