Re: [PATCH v3 04/13] remoteproc: qcom_q6v5_mss: Handle platforms with one power domain

[Stephan Gerhold <stephan.gerhold@linaro.org>]

On Tue, Jan 28, 2025 at 11:45:51AM +0100, Konrad Dybcio wrote:
> On 27.01.2025 11:45 PM, Luca Weiss wrote:
> > For example MSM8974 has mx voltage rail exposed as regulator and only cx
> > voltage rail is exposed as power domain. This power domain (cx) is
> > attached internally in power domain and cannot be attached in this driver.
> > 
> > Fixes: 8750cf392394 ("remoteproc: qcom_q6v5_mss: Allow replacing regulators with power domains")
> > Co-developed-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
> > Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
> > Signed-off-by: Luca Weiss <luca@lucaweiss.eu>
> > ---
> >  drivers/remoteproc/qcom_q6v5_mss.c | 20 +++++++++++++++++---
> >  1 file changed, 17 insertions(+), 3 deletions(-)
> > 
> > diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c
> > index e78bd986dc3f256effce4470222c0a5faeea86ec..0e1b0934ceedd13d5790b798afc95d68a8314c75 100644
> > --- a/drivers/remoteproc/qcom_q6v5_mss.c
> > +++ b/drivers/remoteproc/qcom_q6v5_mss.c
> > @@ -1831,6 +1831,13 @@ static int q6v5_pds_attach(struct device *dev, struct device **devs,
> >  	while (pd_names[num_pds])
> >  		num_pds++;
> >  
> > +	/* Handle single power domain */
> > +	if (num_pds == 1 && dev->pm_domain) {
> > +		devs[0] = dev;
> > +		pm_runtime_enable(dev);
> 
> This call can fail
> 

It returns void though? :D

void pm_runtime_enable(struct device *dev);

Stephan