blackfin: bf561: forgot CSYNC in get_core_lock_noflush



SMP kgdb runs into dead loop without this CSYNC when one core single
steps over get_core_lock_noflush and the other executes get_core_lock
as a slave node.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bob Liu <lliubbo@gmail.com>

parent 5d002cce

arch/blackfin/mach-bf561/atomic.S

+7 −0

Original line number	Diff line number	Diff line
		@@ -72,6 +72,13 @@ ENTRY(_get_core_lock_noflush)
		SSYNC(r2);
		jump .Lretry_corelock_noflush
		.Ldone_corelock_noflush:
		/*
		* SMP kgdb runs into dead loop without NOP here, when one core
		* single steps over get_core_lock_noflush and the other executes
		* get_core_lock as a slave node.
		*/
		nop;
		CSYNC(r2);
		rts;
		ENDPROC(_get_core_lock_noflush)