* Tony Lindgren <tony@xxxxxxxxxxx> [160128 11:20]: > * Tero Kristo <t-kristo@xxxxxx> [160128 11:10]: > > On 01/28/2016 09:00 PM, Tony Lindgren wrote: > > >* Tero Kristo <t-kristo@xxxxxx> [160128 10:48]: > > >>On 01/28/2016 07:22 PM, Tony Lindgren wrote: > > >>>* Tero Kristo <t-kristo@xxxxxx> [160128 03:44]: > > >>>>On 01/28/2016 01:37 PM, Tero Kristo wrote: > > >>>>>As the code in this file is being executed within irq context in some > > >>>>>cases, we must avoid the clk_get_rate which uses mutex internally. > > >>>>>Switch the code to use clk_hw_get_rate instead which is non-locking. > > >>>>> > > >>>>>Signed-off-by: Tero Kristo <t-kristo@xxxxxx> > > >>>> > > >>>>Ooops, sorry. Sent wrong version (read: old) of this patch, please ignore > > >>>>this one. Will re-send the correct version in a bit. > > >>> > > >>>I think this is still needed as a fix for -rc cycle with cc: stable > > >>>as otherwise we have omap4 and 5 hang if PM runtime is enabled before > > >>>a suspend/resume cycle? > > >> > > >>Look at the other patch I sent, it should accomplish the same thing, and > > >>more. > > >> > > >>https://www.spinics.net/lists/linux-clk/msg06094.html > > > > > >Right.. But is that suitable for the -rc cycle with cc stable? > > > > Hmm yea, thats a good question, we may need to resurrect this patch after > > all. > > Yes a minimal fix first with cc stable, then the rest of the changes > can be done for v4.6? > > > >You should also describe the bug it causes in the change log. > > >Something like: > > > > > >This fixes an issue where PM runtime will hang the system if > > >enabled with a serial console before a suspend-resume cycle. > > > > Yea I can add this to the desc if we want to keep this version of the patch. > > Yes please. It seems the fix should be cc stable for several merge > windows. Tero, what's the status on this one? We have systems hang shortly after entering init if PM is enabled without this one. Regards, Tony -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
