rtc: rtc-mxc: adapt to the new i.mx clock framework

i.mx drivers should use clk_prepare_enable/clk_disable_unprepare() in
order to avoid clk warnings.

While at it, convert to devm_clk_get() since other devm_ functions are
used in this driver and it can also save some clk_put() calls.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 4 insertions, 6 deletions

diff --git a/drivers/rtc/rtc-mxc.c b/drivers/rtc/rtc-mxc.c
index e3e50d69baf8..334c43e0ce0e 100644
--- a/drivers/rtc/rtc-mxc.c
+++ b/drivers/rtc/rtc-mxc.c
@@ -367,14 +367,14 @@ static int __init mxc_rtc_probe(struct platform_device *pdev)
         pdata->ioaddr = devm_ioremap(&pdev->dev, res->start,
                                      resource_size(res));
 
-        pdata->clk = clk_get(&pdev->dev, "rtc");
+        pdata->clk = devm_clk_get(&pdev->dev, NULL);
         if (IS_ERR(pdata->clk)) {
                 dev_err(&pdev->dev, "unable to get clock!\n");
                 ret = PTR_ERR(pdata->clk);
                 goto exit_free_pdata;
         }
 
-        clk_enable(pdata->clk);
+        clk_prepare_enable(pdata->clk);
         rate = clk_get_rate(pdata->clk);
 
         if (rate == 32768)
@@ -426,8 +426,7 @@ static int __init mxc_rtc_probe(struct platform_device *pdev)
 exit_clr_drvdata:
         platform_set_drvdata(pdev, NULL);
 exit_put_clk:
-        clk_disable(pdata->clk);
-        clk_put(pdata->clk);
+        clk_disable_unprepare(pdata->clk);
 
 exit_free_pdata:
 
@@ -440,8 +439,7 @@ static int __exit mxc_rtc_remove(struct platform_device *pdev)
 
         rtc_device_unregister(pdata->rtc);
 
-        clk_disable(pdata->clk);
-        clk_put(pdata->clk);
+        clk_disable_unprepare(pdata->clk);
         platform_set_drvdata(pdev, NULL);
 
         return 0;