Commit 8347784d authored by Wen Gong's avatar Wen Gong Committed by Kalle Valo
Browse files

ath10k: drop the TX packet which size exceed credit size for sdio 



sdio chip use DMA buffer to receive TX packet from ath10k, and it has
limitation of each buffer, if the packet size exceed the credit size,
it will trigger error in firmware.

Tested with QCA6174 SDIO with firmware
WLAN.RMH.4.4.1-00017-QCARMSWP-1.

Signed-off-by: default avatarWen Gong <wgong@codeaurora.org>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200422084719.3479-1-wgong@codeaurora.org
parent aac392d8

drivers/net/wireless/ath/ath10k/htc.c

+5 −0
Original line number Diff line number Diff line
@@ -846,6 +846,11 @@ int ath10k_htc_send_hl(struct ath10k_htc *htc, 
	struct ath10k_htc_ep *ep = &htc->endpoint[eid];

	struct ath10k *ar = htc->ar;



	if (sizeof(struct ath10k_htc_hdr) + skb->len > ep->tx_credit_size) {

		ath10k_dbg(ar, ATH10K_DBG_HTC, "tx exceed max len %d\n", skb->len);

		return -ENOMEM;

	}



	ath10k_dbg(ar, ATH10K_DBG_HTC, "htc send hl eid %d bundle %d tx count %d len %d\n",

		   eid, ep->bundle_tx, skb_queue_len(&ep->tx_req_head), skb->len);