linux-kernel - [PATCH v3 1/2] RTC: rtc-twl: Fix rtc_reg

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Date:	Thu, 6 Jun 2013 10:13:37 +0200
From:	Peter Ujfalusi <peter.ujfalusi@...com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Tony Lindgren <tony@...mide.com>,
	Alessandro Zummo <a.zummo@...ertech.it>,
	Thomas Gleixner <tglx@...utronix.de>,
	<rtc-linux@...glegroups.com>, <linux-kernel@...r.kernel.org>,
	<linux-omap@...r.kernel.org>,
	Grygorii Strashko <grygorii.strashko@...com>,
	Tomi Valkeinen <tomi.valkeinen@...com>
Subject: [PATCH v3 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>
Tested-by: Kevin Hilman <khilman@...aro.org>
Tested-by: Grygorii Strashko <grygorii.strashko@...com>
---
Hi,

Changes since v2:
- Acked-by and Tested-by added to patches
- Recreated on top of 3.10-rc4

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 8751a52..c9060e9 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;
@@ -610,11 +616,6 @@ 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);
-- 
1.8.2.1

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