rapidio: fix maximum port number in tsi57x EM initialization

Replace hardcoded maximum port number with actual reported number of
switch ports.

Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Li Yang <leoli@freescale.com>
Cc: Thomas Moll <thomas.moll@sysgo.com>
Cc: Micha Nelissen <micha@neli.hopto.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/rapidio/switches/tsi57x.c b/drivers/rapidio/switches/tsi57x.c
index d9e94920e8b0..2003fb63c404 100644
--- a/drivers/rapidio/switches/tsi57x.c
+++ b/drivers/rapidio/switches/tsi57x.c
@@ -166,7 +166,8 @@ tsi57x_em_init(struct rio_dev *rdev)
 
         pr_debug("TSI578 %s [%d:%d]\n", __func__, destid, hopcount);
 
-        for (portnum = 0; portnum < 16; portnum++) {
+        for (portnum = 0;
+             portnum < RIO_GET_TOTAL_PORTS(rdev->swpinfo); portnum++) {
                 /* Make sure that Port-Writes are enabled (for all ports) */
                 rio_mport_read_config_32(mport, destid, hopcount,
                                 TSI578_SP_MODE(portnum), &regval);