From 0d24b0eade7d4b6a5d06fe02645449b1fd0f8e17 Mon Sep 17 00:00:00 2001 From: Hante Meuleman Date: Thu, 6 Jun 2013 13:17:58 +0200 Subject: brcmfmac: Accept only first creditmap event. During P2P testing it turned out that the firmware sents multiple multiple creditmap event messages. Only the first message from the firmware should be processed. Otherwise the firmware-signalled flow control can run haywire when it has packets outstanding in firmware. Reviewed-by: Arend Van Spriel Signed-off-by: Hante Meuleman Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville --- drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers') diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c index 5f3874288d6b..bba4ff04ee19 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c @@ -434,6 +434,7 @@ struct brcmf_fws_info { u32 fifo_delay_map; unsigned long borrow_defer_timestamp; bool bus_flow_blocked; + bool creditmap_received; }; /* @@ -1356,6 +1357,10 @@ static int brcmf_fws_notify_credit_map(struct brcmf_if *ifp, brcmf_err("event payload too small (%d)\n", e->datalen); return -EINVAL; } + if (fws->creditmap_received) + return 0; + + fws->creditmap_received = true; brcmf_dbg(TRACE, "enter: credits %pM\n", credits); brcmf_fws_lock(ifp->drvr, flags); -- cgit v1.2.3