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[10/12] brcmfmac: fix brcmf_sdcard_send_pkt() for host without sg support

Message ID 1381844697-24881-11-git-send-email-arend@broadcom.com (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Arend van Spriel Oct. 15, 2013, 1:44 p.m. UTC 
If the host does not support scatter-gather transmit the packets
in the pktq individually using brcmf_sdio_buffrw().

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>
---
 drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c |   14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)
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Patch

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
index 92818d79..1103dc1 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
@@ -620,6 +620,7 @@  int
 brcmf_sdcard_send_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
 		      uint flags, struct sk_buff_head *pktq)
 {
+	struct sk_buff *skb;
 	uint width;
 	int err;
 
@@ -631,9 +632,16 @@  brcmf_sdcard_send_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
 	if (err)
 		return err;
 
-	if (pktq->qlen == 1)
-		return brcmf_sdio_buffrw(sdiodev, fn, true, addr, pktq->next);
-	return brcmf_sdio_sglist_rw(sdiodev, fn, true, addr, pktq);
+	if (pktq->qlen == 1 || !sdiodev->sg_support)
+		skb_queue_walk(pktq, skb) {
+			err = brcmf_sdio_buffrw(sdiodev, fn, true, addr, skb);
+			if (err)
+				break;
+		}
+	else
+		err = brcmf_sdio_sglist_rw(sdiodev, fn, true, addr, pktq);
+
+	return err;
 }
 
 int