diff options
| author | Ben Dooks <ben.dooks@codethink.co.uk> | 2014-01-14 16:23:42 +0400 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-01-15 04:50:50 +0400 |
| commit | 5cda3fbb155bff96c971d058ed040d5c85612fd8 (patch) | |
| tree | ae3bc88e136fd24a3ed4cd8e358897c6967069e8 | |
| parent | afdd3ab315a4454ccb7895ddade2c20bdf91f5c6 (diff) | |
| download | linux-5cda3fbb155bff96c971d058ed040d5c85612fd8.tar.xz | |
PM / clock_ops: report clock errors from clk_enable()
If clk_enable() fails, then print a message so that the user can see
what is happening instead of silently failing to enable the clock.
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Reviewed-by: Ian Molton <ian.molton@codethink.co.uk>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/base/power/clock_ops.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/base/power/clock_ops.c b/drivers/base/power/clock_ops.c index cad7190465d6..e870bbe9ec4e 100644 --- a/drivers/base/power/clock_ops.c +++ b/drivers/base/power/clock_ops.c @@ -33,6 +33,21 @@ struct pm_clock_entry { }; /** + * pm_clk_enable - Enable a clock, reporting any errors + * @dev: The device for the given clock + * @clk: The clock being enabled. + */ +static inline int __pm_clk_enable(struct device *dev, struct clk *clk) +{ + int ret = clk_enable(clk); + if (ret) + dev_err(dev, "%s: failed to enable clk %p, error %d\n", + __func__, clk, ret); + + return ret; +} + +/** * pm_clk_acquire - Acquire a device clock. * @dev: Device whose clock is to be acquired. * @ce: PM clock entry corresponding to the clock. @@ -263,7 +278,7 @@ int pm_clk_resume(struct device *dev) list_for_each_entry(ce, &psd->clock_list, node) { if (ce->status < PCE_STATUS_ERROR) { - ret = clk_enable(ce->clk); + ret = __pm_clk_enable(dev, ce->clk); if (!ret) ce->status = PCE_STATUS_ENABLED; } @@ -381,7 +396,7 @@ int pm_clk_resume(struct device *dev) spin_lock_irqsave(&psd->lock, flags); list_for_each_entry(ce, &psd->clock_list, node) - clk_enable(ce->clk); + __pm_clk_enable(dev, ce->clk); spin_unlock_irqrestore(&psd->lock, flags); |