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mt76: usb: simplify mt76u_tx_build_sg routine

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Use skb_to_sgvec instad of skb_to_sgvec_nomark in mt76u_tx_build_sg.
Remove nsgs check in mt76u_tx_build_sg since it is already performed
by skb_to_sgvec

Suggested-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Lorenzo Bianconi 2019-02-20 23:35:18 +01:00 committed by Felix Fietkau
parent 888199b892
commit 04eb16fc70
1 changed files with 3 additions and 14 deletions
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17
drivers/net/wireless/mediatek/mt76/usb.c
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@ -714,23 +714,12 @@ static int
mt76u_tx_build_sg(struct mt76_dev *dev, struct sk_buff *skb,
struct urb *urb)
{
struct sk_buff *iter;
int nsgs;
if (!dev->usb.sg_en)
return 0;
nsgs = 1 + skb_shinfo(skb)->nr_frags;
skb_walk_frags(skb, iter)
nsgs += 1 + skb_shinfo(iter)->nr_frags;
memset(urb->sg, 0, sizeof(*urb->sg) * MT_SG_MAX_SIZE);
nsgs = min_t(int, MT_SG_MAX_SIZE, nsgs);
sg_init_marker(urb->sg, nsgs);
urb->num_sgs = nsgs;
return skb_to_sgvec_nomark(skb, urb->sg, 0, skb->len);
sg_init_table(urb->sg, MT_SG_MAX_SIZE);
urb->num_sgs = skb_to_sgvec(skb, urb->sg, 0, skb->len);
return urb->num_sgs;
}
static int