[PATCH] PCI: fix bad bugs in bridge setup code

[Lucas Stach]

Add the required brackets, so that we don't write unused registers
with potentially bogus values.

Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
---
/me hides under a rock
---
 drivers/pci/pci.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 5b848eeb2a53..1f5dc78b3ce1 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -259,15 +259,17 @@ static void postscan_setup_bridge(struct pci_dev *dev)
 	/* limit subordinate to last used bus number */
 	pci_write_config_byte(dev, PCI_SUBORDINATE_BUS, bus_index - 1);
 
-	if (last_mem)
+	if (last_mem) {
 		last_mem = ALIGN(last_mem, SZ_1M);
 		pci_write_config_word(dev, PCI_MEMORY_LIMIT,
 				      ((last_mem - 1) & 0xfff00000) >> 16);
+	}
 
-	if (last_mem_pref)
+	if (last_mem_pref) {
 		last_mem_pref = ALIGN(last_mem_pref, SZ_1M);
 		pci_write_config_word(dev, PCI_PREF_MEMORY_LIMIT,
 				      ((last_mem_pref - 1) & 0xfff00000) >> 16);
+	}
 
 	if (last_io) {
 		last_io = ALIGN(last_io, SZ_4K);
-- 
2.1.4