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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-10-07 01:18:58 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-10-07 01:18:58 +0200
commit9f1a053296953c69d7f23511db9441290cb89e2c (patch)
tree97c6104d5d620736cc723788d3652c63f8e6b7b8
parentc9671d17f82accff42bfafdd776edc260f8d1bb3 (diff)
parenta968bed78b549b4c61d4a46e59161fc1f60f96a6 (diff)
Merge branch 'pm-clk'
* pm-clk: PM / clk: Fix crash in clocks management code if !CONFIG_PM_RUNTIME
-rw-r--r--drivers/base/power/clock_ops.c19
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/base/power/clock_ops.c b/drivers/base/power/clock_ops.c
index b99e6c06ee67..78369305e069 100644
--- a/drivers/base/power/clock_ops.c
+++ b/drivers/base/power/clock_ops.c
@@ -368,8 +368,13 @@ int pm_clk_suspend(struct device *dev)
spin_lock_irqsave(&psd->lock, flags);
- list_for_each_entry_reverse(ce, &psd->clock_list, node)
- clk_disable(ce->clk);
+ list_for_each_entry_reverse(ce, &psd->clock_list, node) {
+ if (ce->status < PCE_STATUS_ERROR) {
+ if (ce->status == PCE_STATUS_ENABLED)
+ clk_disable(ce->clk);
+ ce->status = PCE_STATUS_ACQUIRED;
+ }
+ }
spin_unlock_irqrestore(&psd->lock, flags);
@@ -385,6 +390,7 @@ int pm_clk_resume(struct device *dev)
struct pm_subsys_data *psd = dev_to_psd(dev);
struct pm_clock_entry *ce;
unsigned long flags;
+ int ret;
dev_dbg(dev, "%s()\n", __func__);
@@ -394,8 +400,13 @@ int pm_clk_resume(struct device *dev)
spin_lock_irqsave(&psd->lock, flags);
- list_for_each_entry(ce, &psd->clock_list, node)
- __pm_clk_enable(dev, ce->clk);
+ list_for_each_entry(ce, &psd->clock_list, node) {
+ if (ce->status < PCE_STATUS_ERROR) {
+ ret = __pm_clk_enable(dev, ce->clk);
+ if (!ret)
+ ce->status = PCE_STATUS_ENABLED;
+ }
+ }
spin_unlock_irqrestore(&psd->lock, flags);