linux-kernel - [PATCH v2 1/2] RTC: rtc-twl: Fix rtc_reg

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Date:	Tue, 16 Apr 2013 10:30:12 +0200
From:	Peter Ujfalusi <peter.ujfalusi@...com>
To:	Alessandro Zummo <a.zummo@...ertech.it>,
	Tony Lindgren <tony@...mide.com>
CC:	<rtc-linux@...glegroups.com>, <linux-kernel@...r.kernel.org>,
	<linux-omap@...r.kernel.org>,
	Christoph Fritz <chf.fritz@...glemail.com>,
	Grygorii Strashko <grygorii.strashko@...com>,
	Tomi Valkeinen <tomi.valkeinen@....fi>
Subject: [PATCH v2 1/2] RTC: rtc-twl: Fix rtc_reg_map initialization

Initialize the rtc_reg_map in platform_driver's probe function instead at
module_init time. This way we can make sure that the twl-core has been already
probed and initialized (twl_priv->twl_id is valid) since the platform device
for the RTC driver will be created by the twl-core after it finished it's
init.

Reported-by: Christoph Fritz <chf.fritz@...glemail.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
---
Hi,

As Tomi commented on the first version:
www.spinics.net/lists/linux-omap/msg90064.html
www.spinics.net/lists/linux-omap/msg90066.html

I have separated the actual fix from the module_platform_driver() conversion.

Regards,
Peter

 drivers/rtc/rtc-twl.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c
index 8bc6c80..c385e9b 100644
--- a/drivers/rtc/rtc-twl.c
+++ b/drivers/rtc/rtc-twl.c
@@ -469,6 +469,12 @@ static int twl_rtc_probe(struct platform_device *pdev)
 	if (irq <= 0)
 		goto out1;
 
+	/* Initialize the register map */
+	if (twl_class_is_4030())
+		rtc_reg_map = (u8 *)twl4030_rtc_reg_map;
+	else
+		rtc_reg_map = (u8 *)twl6030_rtc_reg_map;
+
 	ret = twl_rtc_read_u8(&rd_reg, REG_RTC_STATUS_REG);
 	if (ret < 0)
 		goto out1;
@@ -614,11 +620,6 @@ static struct platform_driver twl4030rtc_driver = {
 
 static int __init twl_rtc_init(void)
 {
-	if (twl_class_is_4030())
-		rtc_reg_map = (u8 *) twl4030_rtc_reg_map;
-	else
-		rtc_reg_map = (u8 *) twl6030_rtc_reg_map;
-
 	return platform_driver_register(&twl4030rtc_driver);
 }
 module_init(twl_rtc_init);
-- 
1.8.1.5

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