brcmfmac: fix brcmf_sdcard_recv_chain() for host without sg support
If the SDIO host controller does not support scatter-gather the glom
superframe must be transfered from the device and the data for each
packet in the queue must be extracted from it.
Reviewed-by: Franky Lin <frankyl@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
index 1103dc1..3e10b80 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
@@ -569,8 +569,10 @@
}
int brcmf_sdcard_recv_chain(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
- uint flags, struct sk_buff_head *pktq)
+ uint flags, struct sk_buff_head *pktq, uint totlen)
{
+ struct sk_buff *glom_skb;
+ struct sk_buff *skb;
uint width;
int err = 0;
@@ -582,7 +584,22 @@
if (err)
goto done;
- err = brcmf_sdio_sglist_rw(sdiodev, fn, false, addr, pktq);
+ if (pktq->qlen == 1)
+ err = brcmf_sdio_buffrw(sdiodev, fn, false, addr, pktq->next);
+ else if (!sdiodev->sg_support) {
+ glom_skb = brcmu_pkt_buf_get_skb(totlen);
+ if (!glom_skb)
+ return -ENOMEM;
+ err = brcmf_sdio_buffrw(sdiodev, fn, false, addr, glom_skb);
+ if (err)
+ goto done;
+
+ skb_queue_walk(pktq, skb) {
+ memcpy(skb->data, glom_skb->data, skb->len);
+ skb_pull(glom_skb, skb->len);
+ }
+ } else
+ err = brcmf_sdio_sglist_rw(sdiodev, fn, false, addr, pktq);
done:
return err;