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PM: clock_ops: fix missing clk_prepare() return value check
clk_prepare() can fail, so check its status and if it fails, issue an error message and change the clock_entry_status to PCE_STATUS_ERROR. Signed-off-by: Aditya Pakki <pakki001@umn.edu> [ rjw: Subject ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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1 changed files with 9 additions and 4 deletions
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@ -65,10 +65,15 @@ static void pm_clk_acquire(struct device *dev, struct pm_clock_entry *ce)
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if (IS_ERR(ce->clk)) {
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ce->status = PCE_STATUS_ERROR;
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} else {
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clk_prepare(ce->clk);
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ce->status = PCE_STATUS_ACQUIRED;
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dev_dbg(dev, "Clock %pC con_id %s managed by runtime PM.\n",
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ce->clk, ce->con_id);
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if (clk_prepare(ce->clk)) {
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ce->status = PCE_STATUS_ERROR;
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dev_err(dev, "clk_prepare() failed\n");
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} else {
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ce->status = PCE_STATUS_ACQUIRED;
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dev_dbg(dev,
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"Clock %pC con_id %s managed by runtime PM.\n",
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ce->clk, ce->con_id);
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}
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}
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}
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