Messages in this thread Patch in this message | | | From | Ben Dooks <> | Subject | [PATCH 2/3] power: clock_ops.c: check return of clk_enable() in pm_clk_resume() | Date | Sat, 11 Jan 2014 13:05:39 +0000 |
| |
The clk_enable() call in the pm_clk_resume() call returns an error that is not being checked. If clk_enable() fails then we should not set the state of the clock to PCE_STATUS_ENABLED.
Note, the issue of warning the user if this fails has not been addressed in this patch as this is not the only place the driver calls clk_enable().
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Pavel Machek <pavel@ucw.cz> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-pm@vger.kernel.org Cc: linux-sh@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Reviewed-by: Ian Molton <ian.molton@codethink.co.uk> --- drivers/base/power/clock_ops.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/base/power/clock_ops.c b/drivers/base/power/clock_ops.c index b9dd8fa..9bb95ab 100644 --- a/drivers/base/power/clock_ops.c +++ b/drivers/base/power/clock_ops.c @@ -252,6 +252,7 @@ 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__); @@ -262,8 +263,9 @@ int pm_clk_resume(struct device *dev) list_for_each_entry(ce, &psd->clock_list, node) { if (ce->status < PCE_STATUS_ERROR) { - clk_enable(ce->clk); - ce->status = PCE_STATUS_ENABLED; + ret = clk_enable(ce->clk); + if (ret == 0) + ce->status = PCE_STATUS_ENABLED; } } -- 1.8.5.2
| |