Re: [PATCH - stable v5.4 and v5.7] opp: Enable resources again if they were disabled earlier

[Greg KH]

On Mon, Aug 24, 2020 at 02:52:23PM +0530, Viresh Kumar wrote:
> From: Rajendra Nayak <rnayak@xxxxxxxxxxxxxx>
> 
> commit a4501bac0e553bed117b7e1b166d49731caf7260 upstream.
> 
> dev_pm_opp_set_rate() can now be called with freq = 0 in order
> to either drop performance or bandwidth votes or to disable
> regulators on platforms which support them.
> 
> In such cases, a subsequent call to dev_pm_opp_set_rate() with
> the same frequency ends up returning early because 'old_freq == freq'
> 
> Instead make it fall through and put back the dropped performance
> and bandwidth votes and/or enable back the regulators.
> 
> Cc: v5.3+ <stable@xxxxxxxxxxxxxxx> # v5.3+
> Fixes: cd7ea582866f ("opp: Make dev_pm_opp_set_rate() handle freq = 0 to drop performance votes")
> Reported-by: Sajida Bhanu <sbhanu@xxxxxxxxxxxxxx>
> Reviewed-by: Sibi Sankar <sibis@xxxxxxxxxxxxxx>
> Reported-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx>
> Tested-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx>
> Reviewed-by: Stephen Boyd <sboyd@xxxxxxxxxx>
> Signed-off-by: Rajendra Nayak <rnayak@xxxxxxxxxxxxxx>
> [ Viresh: Don't skip clk_set_rate() and massaged changelog ]
> Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
> [ Viresh: Updated the patch to apply to v5.4 ]
> Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
> ---
>  drivers/opp/core.c | 10 ++++++----
>  1 file changed, 6 insertions(+), 4 deletions(-)

This too is already in the 5.7 and 5.4 queues, why add it again?

thanks,

greg k-h