xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

mt76usb: allocate urb and sg as linear data

Browse Source 
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>
This commit is contained in:
Stanislaw Gruszka
2019-03-21 16:25:36 +01:00
committed by Felix Fietkau
parent 7524c63f1f
commit 85d2955ea1
1 changed files with 10 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/net/wireless/mediatek/mt76/usb.c
View File

@@ -336,19 +336,19 @@ mt76u_refill_rx(struct mt76_dev *dev, struct urb *urb, int nsgs, gfp_t gfp)
static int static int
mt76u_urb_alloc(struct mt76_dev *dev, struct mt76_queue_entry *e) mt76u_urb_alloc(struct mt76_dev *dev, struct mt76_queue_entry *e)
{ {
struct urb *urb; unsigned int size = sizeof(struct urb);
urb = usb_alloc_urb(0, GFP_KERNEL); if (dev->usb.sg_en)
if (!urb) size += MT_SG_MAX_SIZE * sizeof(struct scatterlist);
return -ENOMEM;
e->urb = urb;
if (dev->usb.sg_en) { e->urb = kzalloc(size, GFP_KERNEL);
urb->sg = devm_kcalloc(dev->dev, MT_SG_MAX_SIZE, if (!e->urb)
sizeof(*urb->sg), GFP_KERNEL);
if (!urb->sg)
return -ENOMEM; return -ENOMEM;
}
usb_init_urb(e->urb);
if (dev->usb.sg_en)
e->urb->sg = (struct scatterlist *)(e->urb + 1);
return 0; return 0;
} }