cpuidle: dt: Return the correct numbers of parsed idle states
authorUlf Hansson <ulf.hansson@linaro.org>
Fri, 21 Oct 2022 15:10:12 +0000 (17:10 +0200)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Fri, 28 Oct 2022 18:07:28 +0000 (20:07 +0200)
commitee3c2c8ad6ba6785f14a60e4081d7c82e88162a2
tree8727e14a61a17383813c93d0990503c48153492c
parent668057b07db069daac3ca4e4978f8373db9cb71c
cpuidle: dt: Return the correct numbers of parsed idle states

While we correctly skips to initialize an idle state from a disabled idle
state node in DT, the returned value from dt_init_idle_driver() don't get
adjusted accordingly. Instead the number of found idle state nodes are
returned, while the callers are expecting the number of successfully
initialized idle states from DT.

This leads to cpuidle drivers unnecessarily continues to initialize their
idle state specific data. Moreover, in the case when all idle states have
been disabled in DT, we would end up registering a cpuidle driver, rather
than relying on the default arch specific idle call.

Fixes: 9f14da345599 ("drivers: cpuidle: implement DT based idle states infrastructure")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/cpuidle/dt_idle_states.c