> -----Original Message----- > From: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx> > Sent: 2019年11月12日 19:11 > To: Joakim Zhang <qiangqing.zhang@xxxxxxx>; sean@xxxxxxxxxx; > linux-can@xxxxxxxxxxxxxxx > Subject: Re: Wake up issue about Flexcan driver in v5.4 kernel > > On 11/12/19 12:10 PM, Joakim Zhang wrote: > >> The question remains, has the wakeup time increased compared to older > >> kernels? Or was it pure luck that you have not seen this problem in > >> older kernels? > > > > I have tested all upstream version since stop mode enabled(v5.1, v5.2, > > v5.3, v5.4), this issue all exist. With our local 4.14 and 4.19, it is > > fine, maybe we optimize suspend/resume at local. > > Ok. I see more patch opportunities on your side. Marc, any idea to fix the issue, I think I can try to improve wake up case, thanks! Best Regards, Joakim Zhang > Marc > > -- > Pengutronix e.K. | Marc Kleine-Budde | > Embedded Linux | https://www.pengutronix.de | > Vertretung West/Dortmund | Phone: +49-231-2826-924 | > Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
