linux-kernel - [PATCH] rtc-pcf2123: Initialize dynamic sysfs attributes

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Date:	Wed,  8 Aug 2012 14:11:25 +0400
From:	Ilya Shchepetkov <shchepetkov@...ras.ru>
To:	Chris Verges <chrisv@...erswitching.com>
Cc:	Ilya Shchepetkov <shchepetkov@...ras.ru>,
	Christian Pellegrin <chripell@...e.org>,
	Alessandro Zummo <a.zummo@...ertech.it>,
	rtc-linux@...glegroups.com, linux-kernel@...r.kernel.org,
	ldv-project@...ras.ru
Subject: [PATCH] rtc-pcf2123: Initialize dynamic sysfs attributes

Dynamically allocated sysfs attributes must be initialized using
sysfs_attr_init(), otherwise lockdep complains:
BUG: key <address> not in .data!

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Ilya Shchepetkov <shchepetkov@...ras.ru>
---
 drivers/rtc/rtc-pcf2123.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/rtc/rtc-pcf2123.c b/drivers/rtc/rtc-pcf2123.c
index 8361187..13e4df6 100644
--- a/drivers/rtc/rtc-pcf2123.c
+++ b/drivers/rtc/rtc-pcf2123.c
@@ -43,6 +43,7 @@
 #include <linux/rtc.h>
 #include <linux/spi/spi.h>
 #include <linux/module.h>
+#include <linux/sysfs.h>
 
 #define DRV_VERSION "0.6"
 
@@ -292,6 +293,7 @@ static int __devinit pcf2123_probe(struct spi_device *spi)
 	pdata->rtc = rtc;
 
 	for (i = 0; i < 16; i++) {
+		sysfs_attr_init(&pdata->regs[i].attr.attr);
 		sprintf(pdata->regs[i].name, "%1x", i);
 		pdata->regs[i].attr.attr.mode = S_IRUGO | S_IWUSR;
 		pdata->regs[i].attr.attr.name = pdata->regs[i].name;
-- 
1.7.7

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