[PATCH 2/2] net: spider_net: avoid using signed char for bitops

Antoine Tenart
2014-10-03T15:01:56Z

Signedness bugs may occur when using signed char for bitops,
depending on if the highest bit is ever used.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
---
drivers/net/ethernet/toshiba/spider_net.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/toshiba/spider_net.c b/drivers/net/ethernet/toshiba/spider_net.c
index 713313e15c68..8e9371a3388a 100644
--- a/drivers/net/ethernet/toshiba/spider_net.c
+++ b/drivers/net/ethernet/toshiba/spider_net.c
@@ -1325,9 +1325,9 @@ spider_net_set_mac(struct net_device *netdev, void *p)
spider_net_write_reg(card, SPIDER_NET_GMACOPEMD, regvalue);

/* write mac */
- macu = (addr->sa_data[0]<<24) + (addr->sa_data[1]<<16) +
- (addr->sa_data[2]<<8) + (addr->sa_data[3]);
- macl = (addr->sa_data[4]<<8) + (addr->sa_data[5]);
+ macu = (netdev->dev_addr[0]<<24) + (netdev->dev_addr[1]<<16) +
+ (netdev->dev_addr[2]<<8) + (netdev->dev_addr[3]);
+ macl = (netdev->dev_addr[4]<<8) + (netdev->dev_addr[5]);
spider_net_write_reg(card, SPIDER_NET_GMACUNIMACU, macu);
spider_net_write_reg(card, SPIDER_NET_GMACUNIMACL, macl);

--
1.9.1