On Wed 12-07-06 09:29:40, Hu, Fenghua wrote: > Hi all, > > I am struggling with a S4 issue. On a Napa dual-core laptop, sometimes > when resuming from S4, kernel panic occurs, then system reboots. After > some investigation, I found it's due to CPU1(AP) can't be woken up in > time, and > this can be alleviated, even eliminated by introducing more delay in > function wakeup_secondary_cpu().In official kernel tree, there were > three lines in this function for delaying: mdelay(10), udelay(300) and > udelay(200), now I changed them all to mdelay(500). Seems incorrect > timing has led to the issue. Could you help me to root cause it? Thanks. Do you have a copy of panic message and a patch? Or perhaps you just want to ask on lkml for testing? -- Thanks for all the (sleeping) penguins.
