diff options
| author | Chao Xie <chao.xie@marvell.com> | 2013-02-21 16:45:17 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-21 17:22:28 -0800 |
| commit | 0cc0c38e91392d2da769c9831739df43787d99e3 (patch) | |
| tree | add267ad54c66c341418a2abe430e5f40a72c0cb /drivers/rtc | |
| parent | 5e0b2704a1d5c246c8282303bbc952cba17f94fc (diff) | |
| download | lwn-0cc0c38e91392d2da769c9831739df43787d99e3.tar.gz lwn-0cc0c38e91392d2da769c9831739df43787d99e3.zip | |
drivers/rtc/rtc-sa1100.c: move clock enable/disable to probe/remove
The original sa1100_rtc_open/sa1100_rtc_release will be called when the
/dev/rtc0 is opened or closed. In fact, these two functions will
enable/disable the clock. Disabling clock will make rtc not work. So
only enable/disable clock when probe/remove the device.
Signed-off-by: Chao Xie <chao.xie@marvell.com>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Leo Song <liangs@marvell.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-sa1100.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c index df9180e80e3a..5ec5036df0bc 100644 --- a/drivers/rtc/rtc-sa1100.c +++ b/drivers/rtc/rtc-sa1100.c @@ -108,9 +108,6 @@ static int sa1100_rtc_open(struct device *dev) struct rtc_device *rtc = info->rtc; int ret; - ret = clk_prepare_enable(info->clk); - if (ret) - goto fail_clk; ret = request_irq(info->irq_1hz, sa1100_rtc_interrupt, 0, "rtc 1Hz", dev); if (ret) { dev_err(dev, "IRQ %d already in use.\n", info->irq_1hz); @@ -130,7 +127,6 @@ static int sa1100_rtc_open(struct device *dev) free_irq(info->irq_1hz, dev); fail_ui: clk_disable_unprepare(info->clk); - fail_clk: return ret; } @@ -144,7 +140,6 @@ static void sa1100_rtc_release(struct device *dev) free_irq(info->irq_alarm, dev); free_irq(info->irq_1hz, dev); - clk_disable_unprepare(info->clk); } static int sa1100_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) @@ -253,6 +248,9 @@ static int sa1100_rtc_probe(struct platform_device *pdev) spin_lock_init(&info->lock); platform_set_drvdata(pdev, info); + ret = clk_prepare_enable(info->clk); + if (ret) + goto err_enable_clk; /* * According to the manual we should be able to let RTTR be zero * and then a default diviser for a 32.768KHz clock is used. @@ -305,6 +303,8 @@ static int sa1100_rtc_probe(struct platform_device *pdev) return 0; err_dev: + clk_disable_unprepare(info->clk); +err_enable_clk: platform_set_drvdata(pdev, NULL); clk_put(info->clk); err_clk: @@ -318,6 +318,7 @@ static int sa1100_rtc_remove(struct platform_device *pdev) if (info) { rtc_device_unregister(info->rtc); + clk_disable_unprepare(info->clk); clk_put(info->clk); platform_set_drvdata(pdev, NULL); kfree(info); |