[POWERPC] Fix MMIO ops to provide expected barrier behaviour

[powerpc.git] / include / asm-powerpc / paca.h

diff --git a/include/asm-powerpc/paca.h b/include/asm-powerpc/paca.h
index 2d4585f..3d5d590 100644 (file)
--- a/include/asm-powerpc/paca.h
+++ b/include/asm-powerpc/paca.h
@@ -93,6 +93,7 @@ struct paca_struct {
        u64 saved_r1;                   /* r1 save for RTAS calls */
        u64 saved_msr;                  /* MSR saved here by enter_rtas */
        u8 proc_enabled;                /* irq soft-enable flag */
+       u8 io_sync;                     /* writel() needs spin_unlock sync */
 
        /* Stuff for accurate time accounting */
        u64 user_time;                  /* accumulated usermode TB ticks */