* Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx> [121113 17:09]: > Tony Lindgren <tony@xxxxxxxxxxx> writes: > > > > Here's one more booting issue I recently ran into: > > > > - If DEBUG_LL and earlyprintk are enabled, and omap-serial.c > > is compiled as a module, the kernel boot hangs early as the > > clocks for serial port are cut while earlyprintk still uses > > the port. This might be regression from v3.6. > > > > Can you test if the patch below[1] helps? With that, it seems to finish > booting for me (based solely on a ping test.) > > The problem is a race between the late_initcall for omap_device (which > idles devices that have no drivers) and the late_initcall in > kernel/printk.c which turns off the earlyconsole. Any printks > that happen between this omap_device late initcall and the earlyconsole > late initcall will crash when accessing the UART. Yeh that fixes it for me: Tested-by: Tony Lindgren <tony@xxxxxxxxxxx> > Kevin > > [1] > > diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c > index 7a7d1f2..138114a 100644 > --- a/arch/arm/plat-omap/omap_device.c > +++ b/arch/arm/plat-omap/omap_device.c > @@ -1275,4 +1275,4 @@ static int __init omap_device_late_init(void) > bus_for_each_dev(&platform_bus_type, NULL, NULL, omap_device_late_idle); > return 0; > } > -late_initcall(omap_device_late_init); > +late_initcall_sync(omap_device_late_init); -- 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
