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treewide: drop no-op prefetch() calls

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These all end up using the no-op prefetch() defined in linux/list.h,
because the only possible real implementation is in
arch/mips/include/asm/processor.h, which is behing
CONFIG_CPU_HAS_PREFETCH which is nowhere defined.

In order to be able to drop that fallback definition from list.h,
first remove all uses.

Signed-off-by: Rasmus Villemoes <ravi@prevas.dk>
This commit is contained in:
Rasmus Villemoes 2025-05-07 14:12:44 +02:00 committed by Tom Rini
parent c1c2b5c6a4
commit f5fa73a625
4 changed files with 0 additions and 6 deletions
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1
drivers/net/mvpp2.c
View File

@ -3876,7 +3876,6 @@ mvpp2_rxq_next_desc_get(struct mvpp2_rx_queue *rxq)
int rx_desc = rxq->next_desc_to_proc; int rx_desc = rxq->next_desc_to_proc;
rxq->next_desc_to_proc = MVPP2_QUEUE_NEXT_DESC(rxq, rx_desc); rxq->next_desc_to_proc = MVPP2_QUEUE_NEXT_DESC(rxq, rx_desc);
prefetch(rxq->descs + rxq->next_desc_to_proc);
return rxq->descs + rx_desc; return rxq->descs + rx_desc;
} }

2
drivers/net/octeontx/nicvf_main.c
View File

@ -279,8 +279,6 @@ int nicvf_cq_handler(struct nicvf *nic, void **ppkt, int *pkt_len)
cq_desc = (struct cqe_rx_t *)GET_CQ_DESC(cq, cqe_head); cq_desc = (struct cqe_rx_t *)GET_CQ_DESC(cq, cqe_head);
cqe_head++; cqe_head++;
cqe_head &= (cq->dmem.q_len - 1); cqe_head &= (cq->dmem.q_len - 1);
/* Initiate prefetch for next descriptor */
prefetch((struct cqe_rx_t *)GET_CQ_DESC(cq, cqe_head));
switch (cq_desc->cqe_type) { switch (cq_desc->cqe_type) {
case CQE_TYPE_RX: case CQE_TYPE_RX:

1
drivers/usb/gadget/at91_udc.c
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@ -228,7 +228,6 @@ static int write_fifo(struct at91_ep *ep, struct at91_request *req)
} }
buf = req->req.buf + req->req.actual; buf = req->req.buf + req->req.actual;
prefetch(buf);
total = req->req.length - req->req.actual; total = req->req.length - req->req.actual;
if (ep->ep.maxpacket < total) { if (ep->ep.maxpacket < total) {
count = ep->ep.maxpacket; count = ep->ep.maxpacket;

2
drivers/usb/musb-new/musb_core.c
View File

@ -223,8 +223,6 @@ void musb_write_fifo(struct musb_hw_ep *hw_ep, u16 len, const u8 *src)
struct musb *musb = hw_ep->musb; struct musb *musb = hw_ep->musb;
void __iomem *fifo = hw_ep->fifo; void __iomem *fifo = hw_ep->fifo;
prefetch((u8 *)src);
dev_dbg(musb->controller, "%cX ep%d fifo %p count %d buf %p\n", dev_dbg(musb->controller, "%cX ep%d fifo %p count %d buf %p\n",
'T', hw_ep->epnum, fifo, len, src); 'T', hw_ep->epnum, fifo, len, src);