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mt76usb: allocate urb and sg as linear data
Alloc sg table at the end of urb structure. This will increase cache usage. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
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@ -336,19 +336,19 @@ mt76u_refill_rx(struct mt76_dev *dev, struct urb *urb, int nsgs, gfp_t gfp)
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static int
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mt76u_urb_alloc(struct mt76_dev *dev, struct mt76_queue_entry *e)
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{
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struct urb *urb;
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unsigned int size = sizeof(struct urb);
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urb = usb_alloc_urb(0, GFP_KERNEL);
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if (!urb)
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if (dev->usb.sg_en)
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size += MT_SG_MAX_SIZE * sizeof(struct scatterlist);
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e->urb = kzalloc(size, GFP_KERNEL);
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if (!e->urb)
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return -ENOMEM;
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e->urb = urb;
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if (dev->usb.sg_en) {
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urb->sg = devm_kcalloc(dev->dev, MT_SG_MAX_SIZE,
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sizeof(*urb->sg), GFP_KERNEL);
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if (!urb->sg)
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return -ENOMEM;
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}
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usb_init_urb(e->urb);
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if (dev->usb.sg_en)
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e->urb->sg = (struct scatterlist *)(e->urb + 1);
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return 0;
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}
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