From patchwork Sun Nov 1 21:15:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Andrzej Siewior X-Patchwork-Id: 315601 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2F18CC4741F for ; Sun, 1 Nov 2020 21:17:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EE10420756 for ; Sun, 1 Nov 2020 21:17:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="FE5ZDCLt"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="3WdxC80E" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727322AbgKAVRT (ORCPT ); Sun, 1 Nov 2020 16:17:19 -0500 Received: from Galois.linutronix.de ([193.142.43.55]:54802 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727004AbgKAVRS (ORCPT ); Sun, 1 Nov 2020 16:17:18 -0500 From: Sebastian Andrzej Siewior DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1604265436; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=noj1B5ca/uIxTGRkvRWYeOtEiiJK/kLamBwf0a04x0U=; b=FE5ZDCLtTSGik+U1/WhfQKejt41N1dPm9GEQ40mXwNn12u04UeoTS53Fsi8GbvRA5cBTEE Vr6viBx2jXXU60QOS0n5KEZnb9PQWnk5f9UQTYH4SXD2K3pbLVauFnFIQmQkxsWRILGx3w ZB7QYA0QT954HSgPKCExinlqo0K/kO5cAjn3bn+5hf4eAaqLo49wJZelIV7qM0HYcubJt0 1FoNrXDHT8f/eHwv3DSpP4lK7L//JiT2S9EpVve1jw1LPEu8hkkKqf2Ryia+lgJmWf2NYq wtgJX1K0I/3TPlRY3MrZTNocoN4DmKxPHo7x/8Yzly2vbXy05ldeAr6n6zZQIQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1604265436; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=noj1B5ca/uIxTGRkvRWYeOtEiiJK/kLamBwf0a04x0U=; b=3WdxC80E6my0Y09fE6+rw6C/Q9LY2Z2iZAJrKEOaBxrRe4/dwJZFz44BRpnm7F4GOJFLWo z0lz21a2krFUwDCg== To: linux-wireless@vger.kernel.org Cc: Jouni Malinen , Kalle Valo , Ping-Ke Shih , Ulrich Kunitz , Thomas Gleixner , Sebastian Andrzej Siewior Subject: [PATCH 2/8] airo: Invoke airo_read_wireless_stats() directly Date: Sun, 1 Nov 2020 22:15:30 +0100 Message-Id: <20201101211536.2966644-3-bigeasy@linutronix.de> In-Reply-To: <20201101211536.2966644-1-bigeasy@linutronix.de> References: <20201101211536.2966644-1-bigeasy@linutronix.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org airo_get_wireless_stats() is the iw_handler_if::get_wireless_stats() callback of this driver. This callback was not allowed to sleep until commit a160ee69c6a46 ("wext: let get_wireless_stats() sleep") in v2.6.32. airo still delegates the readout to a thread, which is not longer necessary. Invoke airo_read_wireless_stats() directly from the callback and remove the now unused JOB_WSTATS handling. Signed-off-by: Sebastian Andrzej Siewior Cc: Kalle Valo Cc: linux-wireless@vger.kernel.org --- drivers/net/wireless/cisco/airo.c | 22 +++++----------------- 1 file changed, 5 insertions(+), 17 deletions(-) diff --git a/drivers/net/wireless/cisco/airo.c b/drivers/net/wireless/cisco/airo.c index 87b9398b03fd4..ca423f3b6b3ea 100644 --- a/drivers/net/wireless/cisco/airo.c +++ b/drivers/net/wireless/cisco/airo.c @@ -1144,7 +1144,6 @@ static int airo_thread(void *data); static void timer_func(struct net_device *dev); static int airo_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); static struct iw_statistics *airo_get_wireless_stats(struct net_device *dev); -static void airo_read_wireless_stats(struct airo_info *local); #ifdef CISCO_EXT static int readrids(struct net_device *dev, aironet_ioctl *comp); static int writerids(struct net_device *dev, aironet_ioctl *comp); @@ -1200,7 +1199,6 @@ struct airo_info { #define JOB_MIC 5 #define JOB_EVENT 6 #define JOB_AUTOWEP 7 -#define JOB_WSTATS 8 #define JOB_SCAN_RESULTS 9 unsigned long jobs; int (*bap_read)(struct airo_info*, __le16 *pu16Dst, int bytelen, @@ -3155,8 +3153,6 @@ static int airo_thread(void *data) airo_end_xmit11(dev); else if (test_bit(JOB_STATS, &ai->jobs)) airo_read_stats(dev); - else if (test_bit(JOB_WSTATS, &ai->jobs)) - airo_read_wireless_stats(ai); else if (test_bit(JOB_PROMISC, &ai->jobs)) airo_set_promisc(ai); else if (test_bit(JOB_MIC, &ai->jobs)) @@ -7732,15 +7728,12 @@ static void airo_read_wireless_stats(struct airo_info *local) __le32 *vals = stats_rid.vals; /* Get stats out of the card */ - clear_bit(JOB_WSTATS, &local->jobs); - if (local->power.event) { - up(&local->sem); + if (local->power.event) return; - } + readCapabilityRid(local, &cap_rid, 0); readStatusRid(local, &status_rid, 0); readStatsRid(local, &stats_rid, RID_STATS, 0); - up(&local->sem); /* The status */ local->wstats.status = le16_to_cpu(status_rid.mode); @@ -7783,15 +7776,10 @@ static struct iw_statistics *airo_get_wireless_stats(struct net_device *dev) { struct airo_info *local = dev->ml_priv; - if (!test_bit(JOB_WSTATS, &local->jobs)) { - /* Get stats out of the card if available */ - if (down_trylock(&local->sem) != 0) { - set_bit(JOB_WSTATS, &local->jobs); - wake_up_interruptible(&local->thr_wait); - } else - airo_read_wireless_stats(local); + if (!down_interruptible(&local->sem)) { + airo_read_wireless_stats(local); + up(&local->sem); } - return &local->wstats; }