Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933025AbbKLXh3 (ORCPT ); Thu, 12 Nov 2015 18:37:29 -0500 Received: from youngberry.canonical.com ([91.189.89.112]:45409 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932517AbbKLXTf (ORCPT ); Thu, 12 Nov 2015 18:19:35 -0500 From: Kamal Mostafa To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Felix Fietkau , Kalle Valo , Kamal Mostafa Subject: [PATCH 3.19.y-ckt 098/155] ath9k: declare required extra tx headroom Date: Thu, 12 Nov 2015 15:17:32 -0800 Message-Id: <1447370309-357-99-git-send-email-kamal@canonical.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1447370309-357-1-git-send-email-kamal@canonical.com> References: <1447370309-357-1-git-send-email-kamal@canonical.com> X-Extended-Stable: 3.19 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1498 Lines: 39 3.19.8-ckt10 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Felix Fietkau commit 029cd0370241641eb70235d205aa0b90c84dce44 upstream. ath9k inserts padding between the 802.11 header and the data area (to align it). Since it didn't declare this extra required headroom, this led to some nasty issues like randomly dropped packets in some setups. Signed-off-by: Felix Fietkau Signed-off-by: Kalle Valo Signed-off-by: Kamal Mostafa --- drivers/net/wireless/ath/ath9k/init.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c index d1c3934..82d4f0a 100644 --- a/drivers/net/wireless/ath/ath9k/init.c +++ b/drivers/net/wireless/ath/ath9k/init.c @@ -855,6 +855,7 @@ static void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw) hw->max_rate_tries = 10; hw->sta_data_size = sizeof(struct ath_node); hw->vif_data_size = sizeof(struct ath_vif); + hw->extra_tx_headroom = 4; hw->wiphy->available_antennas_rx = BIT(ah->caps.max_rxchains) - 1; hw->wiphy->available_antennas_tx = BIT(ah->caps.max_txchains) - 1; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/