From 5cda3fbb155bff96c971d058ed040d5c85612fd8 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Tue, 14 Jan 2014 12:23:42 +0000 Subject: 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 Reviewed-by: Ian Molton Signed-off-by: Rafael J. Wysocki --- drivers/base/power/clock_ops.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) (limited to 'drivers/base') 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 @@ -32,6 +32,21 @@ struct pm_clock_entry { enum pce_status status; }; +/** + * 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. @@ -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); -- cgit v1.2.1