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Subject[PATCH] v2 pm: clk: fix a missing check of clk_prepare
Date
clk_prepare() could fail, so let's 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>
---
drivers/base/power/clock_ops.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/base/power/clock_ops.c b/drivers/base/power/clock_ops.c
index 5a42ae4078c2..732764becafe 100644
--- a/drivers/base/power/clock_ops.c
+++ b/drivers/base/power/clock_ops.c
@@ -65,10 +65,15 @@ static void pm_clk_acquire(struct device *dev, struct pm_clock_entry *ce)
if (IS_ERR(ce->clk)) {
ce->status = PCE_STATUS_ERROR;
} else {
- clk_prepare(ce->clk);
- ce->status = PCE_STATUS_ACQUIRED;
- dev_dbg(dev, "Clock %pC con_id %s managed by runtime PM.\n",
- ce->clk, ce->con_id);
+ if (clk_prepare(ce->clk)) {
+ ce->status = PCE_STATUS_ERROR;
+ dev_err(dev, "clk_prepare failed\n");
+ } else {
+ ce->status = PCE_STATUS_ACQUIRED;
+ dev_dbg(dev,
+ "Clock %pC con_id %s managed by runtime PM.\n",
+ ce->clk, ce->con_id);
+ }
}
}

--
2.17.1
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