From e3cbdaf146159d2e708e51d168fd5fab793f766b Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Wed, 8 Jul 2020 19:37:23 +0100 Subject: net: systemport: fix double shift of a vlan_tci by VLAN_PRIO_SHIFT Currently the u16 skb->vlan_tci is being right shifted twice by VLAN_PRIO_SHIFT, once in the macro skb_vlan_tag_get_pri and explicitly by VLAN_PRIO_SHIFT afterwards. The combined shift amount is larger than the u16 so the end result is always zero. Remove the second explicit shift as this is extraneous. Fixes: 6e9fdb60d362 ("net: systemport: Add support for VLAN transmit acceleration") Addresses-Coverity: ("Operands don't affect result") Signed-off-by: Colin Ian King Acked-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bcmsysport.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/net/ethernet/broadcom/bcmsysport.c') diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c index b470551bae4f..dfed9ade6950 100644 --- a/drivers/net/ethernet/broadcom/bcmsysport.c +++ b/drivers/net/ethernet/broadcom/bcmsysport.c @@ -1250,8 +1250,7 @@ static struct sk_buff *bcm_sysport_insert_tsb(struct sk_buff *skb, memset(tsb, 0, sizeof(*tsb)); if (skb_vlan_tag_present(skb)) { - tsb->pcp_dei_vid = (skb_vlan_tag_get_prio(skb) >> - VLAN_PRIO_SHIFT & PCP_DEI_MASK); + tsb->pcp_dei_vid = skb_vlan_tag_get_prio(skb) & PCP_DEI_MASK; tsb->pcp_dei_vid |= (u32)skb_vlan_tag_get_id(skb) << VID_SHIFT; } -- cgit v1.2.3