From e7e17c538604928b98107a08c2c5dc54745d85fe Mon Sep 17 00:00:00 2001 From: Kevin Hilman Date: Wed, 8 May 2013 16:48:01 -0700 Subject: ARM: OMAP2+: omap_device: use late_initcall_sync 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. 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. The fix is to ensure the omap_device initcall happens after the earlyconsole initcall. Reported-by: Tony Lindgren Signed-off-by: Kevin Hilman Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/soc.h | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/arm/mach-omap2/soc.h') diff --git a/arch/arm/mach-omap2/soc.h b/arch/arm/mach-omap2/soc.h index 18fdeeb3a44a..ea89594b7afa 100644 --- a/arch/arm/mach-omap2/soc.h +++ b/arch/arm/mach-omap2/soc.h @@ -496,6 +496,7 @@ level(__##fn); #define omap_subsys_initcall(fn) omap_initcall(subsys_initcall, fn) #define omap_device_initcall(fn) omap_initcall(device_initcall, fn) #define omap_late_initcall(fn) omap_initcall(late_initcall, fn) +#define omap_late_initcall_sync(fn) omap_initcall(late_initcall_sync, fn) #endif /* __ASSEMBLY__ */ -- cgit v1.2.3