On Thu, 2013-05-16 at 07:38 +0800, Stephen Warren wrote: > On 05/15/2013 04:27 AM, Joseph Lo wrote: > > Tegra 114 is different with other Tegra SoC chips. It using ARM Cortex-A15 > > as CPU core and a enhanced flow controller for CPU power control. So > > we need to skip some code that was for Contex-A9 and some other support > > code that was for other Tegra SoC chips. Then adding the proper power up > > and hot plug control for Tegra114. > > This series mostly works OK, but I see one problem: I can't hotunplug > CPU0, which the commit descriptions and code changes imply I should be > able to do: > > root@localhost:~# echo 0 > /sys/devices/system/cpu/cpu0/online > -bash: echo: write error: Operation not permitted I want to provide this function originally. But I found the tegra_cpu_disable() was removed recently. It was replaced by the common cpu_disable() function that didn't allow CPU0 to be un-plugged. But I had verified the CPU0 is OK to be un-plugged on the older linux-next branch that tegra_cpu_disable() watn't removed yet. Do you want me to add them back to support this function for Tegra114? Thanks, Joseph -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
