diff options
| -rw-r--r-- | arch/blackfin/mach-bf561/atomic.S | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/blackfin/mach-bf561/atomic.S b/arch/blackfin/mach-bf561/atomic.S index 52d6f73..2a08df8 100644 --- a/arch/blackfin/mach-bf561/atomic.S +++ b/arch/blackfin/mach-bf561/atomic.S @@ -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) |