Commit 3df8429b authored Dec 06, 2019 by Santosh Mardi Committed by Gerrit - the friendly Code Review server Dec 17, 2019

devfreq: check if get_dev_status is implemented before calling it



devfreq governor code calls the devfreq profile's callback
get_dev_status to return the device status. Not all devices
implement this optional callback. Hence check if the callback
is present before accessing it.

Change-Id: I8fe8ff367ccdcb82ad686e47186258c4cd086696
Signed-off-by: Santosh Mardi <gsantosh@codeaurora.org>
Signed-off-by: Rama Aparna Mallavarapu <aparnam@codeaurora.org>

parent e4f5f922

drivers/devfreq/governor.h

+5 −1

Original line number	Diff line number	Diff line
		@@ -71,6 +71,10 @@ extern int devfreq_update_status(struct devfreq *devfreq, unsigned long freq);

		static inline int devfreq_update_stats(struct devfreq *df)
		{
		return df->profile->get_dev_status(df->dev.parent, &df->last_status);
		if (df->profile->get_dev_status)
		return df->profile->get_dev_status(df->dev.parent,
		&df->last_status);
		else
		return -ENODEV;
		}
		#endif /* _GOVERNOR_H */