Return-path: Received: from mail-la0-f48.google.com ([209.85.215.48]:46946 "EHLO mail-la0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759746AbbBIOGE (ORCPT ); Mon, 9 Feb 2015 09:06:04 -0500 Received: by lams18 with SMTP id s18so13558775lam.13 for ; Mon, 09 Feb 2015 06:06:02 -0800 (PST) From: Michal Kazior To: ath10k@lists.infradead.org Cc: linux-wireless@vger.kernel.org, Michal Kazior Subject: [PATCH] ath10k: workaround corrupted htt rx events Date: Mon, 9 Feb 2015 15:04:55 +0100 Message-Id: <1423490695-24829-1-git-send-email-michal.kazior@tieto.com> (sfid-20150209_150608_913384_A2438FC4) Sender: linux-wireless-owner@vger.kernel.org List-ID: qca6174 WLAN.RM.2.0-00073 firmware uses full rx reordering offload and delivers Rx via a new HTT event. The event however is incorrectly generated in firmware and becomes overly long (with trailing garbage). This was hitting defined CE buffer limit that was programmed to the device and caused device to crash upon busier Rx traffic. Increasing the CE buffer limit for HTT Rx pipe to 2KBytes seems to be enough to workaround this problem. Signed-off-by: Michal Kazior --- drivers/net/wireless/ath/ath10k/pci.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c index e6972b0..7681237 100644 --- a/drivers/net/wireless/ath/ath10k/pci.c +++ b/drivers/net/wireless/ath/ath10k/pci.c @@ -104,7 +104,7 @@ static const struct ce_attr host_ce_config_wlan[] = { { .flags = CE_ATTR_FLAGS, .src_nentries = 0, - .src_sz_max = 512, + .src_sz_max = 2048, .dest_nentries = 512, }, @@ -174,7 +174,7 @@ static const struct ce_pipe_config target_ce_config_wlan[] = { .pipenum = __cpu_to_le32(1), .pipedir = __cpu_to_le32(PIPEDIR_IN), .nentries = __cpu_to_le32(32), - .nbytes_max = __cpu_to_le32(512), + .nbytes_max = __cpu_to_le32(2048), .flags = __cpu_to_le32(CE_ATTR_FLAGS), .reserved = __cpu_to_le32(0), }, -- 1.8.5.3