From: Carl Huang Date: Fri, 11 Dec 2020 17:35:47 +0000 (+0200) Subject: ath11k: set credit_update flag for flow controlled ep only X-Git-Tag: io_uring-5.11-2020-12-23~79^2~32^2^2~3 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=2151ffde188a58d7de8fc92ed5ccf38d73ffdb68;p=linux-2.6-block.git ath11k: set credit_update flag for flow controlled ep only Firmware will check all the pipes before entering WoW mode during suspend. If ATH11K_HTC_FLAG_NEED_CREDIT_UPDATE is set, firmware treats this pipe needed to return credit even though it's actually not required. If any pipe needs to return credit, the suspend_complete message doesn't send to host but is dropped. So host gets time out and WoW suspend failed. Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1 Signed-off-by: Carl Huang Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/1607708150-21066-8-git-send-email-kvalo@codeaurora.org --- diff --git a/drivers/net/wireless/ath/ath11k/htc.c b/drivers/net/wireless/ath/ath11k/htc.c index 059b48ded5cc..54b1d34724d7 100644 --- a/drivers/net/wireless/ath/ath11k/htc.c +++ b/drivers/net/wireless/ath/ath11k/htc.c @@ -60,9 +60,11 @@ static void ath11k_htc_prepare_tx_skb(struct ath11k_htc_ep *ep, memset(hdr, 0, sizeof(*hdr)); hdr->htc_info = FIELD_PREP(HTC_HDR_ENDPOINTID, ep->eid) | FIELD_PREP(HTC_HDR_PAYLOADLEN, - (skb->len - sizeof(*hdr))) | - FIELD_PREP(HTC_HDR_FLAGS, - ATH11K_HTC_FLAG_NEED_CREDIT_UPDATE); + (skb->len - sizeof(*hdr))); + + if (ep->tx_credit_flow_enabled) + hdr->htc_info |= FIELD_PREP(HTC_HDR_FLAGS, + ATH11K_HTC_FLAG_NEED_CREDIT_UPDATE); spin_lock_bh(&ep->htc->tx_lock); hdr->ctrl_info = FIELD_PREP(HTC_HDR_CONTROLBYTES1, ep->seq_no++);