leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

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

Browse Source 
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: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200422084719.3479-1-wgong@codeaurora.org
This commit is contained in:
Wen Gong 2020-04-22 16:47:19 +08:00 committed by Kalle Valo
parent aac392d855
commit 8347784d6f
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/net/wireless/ath/ath10k/htc.c
View File

@ -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);