Flush both reads *and* writes to registers.

Obtained from: Miod Vallat in OpenBSD MFC after: 1 week
2011-03-05 00:59:34 +00:00 · 2011-03-05 00:59:34 +00:00 · 0540c331c7
commit 0540c331c7
parent d9f2a53257
1 changed files with 1 additions and 1 deletions
--- a/sys/dev/isp/isp_freebsd.h
+++ b/sys/dev/isp/isp_freebsd.h
@ -369,7 +369,7 @@ case SYNC_RESULT:						\
 case SYNC_REG:							\
 	bus_space_barrier(isp->isp_osinfo.bus_tag,		\
 	    isp->isp_osinfo.bus_handle, offset, size,		\
-	    BUS_SPACE_BARRIER_READ);				\
+	    BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);	\
 	break;							\
 default:							\
 	break;							\