From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ed1-f51.google.com (mail-ed1-f51.google.com [209.85.208.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 59E031C694 for ; Sun, 7 Jul 2024 12:22:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.51 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720354971; cv=none; b=Qx3ZAiLvufxxN68uWwj4e2AXys/VvrWuVWv4eqHZlvcVOCQhoaCpSR7zZ93rw1HI4mwTZ69dxNrsrxeN+QnKVcDNVefWkiNo31HiM9XCmnjd1mvKO4yzqXq7o5fXwFTmhRvZjDZC8dIfcxuHJPEHlWXMXN0a2IK5NXf89nBhTt8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720354971; c=relaxed/simple; bh=+CXFIVfFvvwW4GvASmxmUlnYwcL+GLAgC+SyDaqFxw0=; h=Message-ID:Date:MIME-Version:To:From:Subject:Content-Type; b=fe3YKwOlx1ureSx+INa0evmMqJxwA1Vyp6Wzj2VeZGgB9+zHAagNZBHvZbcCTqKnt8X9WhiMfXBQzzMNXz0aKQ+VTWj3opxNRe7FVmmQvHVBvoLzbjLqtK4qzABIiJQaSa9ZCOMMweJfmlhzR0y+KZ3ezuY4fbPPTdS012y4Lq0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=c1pMmGYY; arc=none smtp.client-ip=209.85.208.51 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="c1pMmGYY" Received: by mail-ed1-f51.google.com with SMTP id 4fb4d7f45d1cf-58ba3e37feeso4144092a12.3 for ; Sun, 07 Jul 2024 05:22:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1720354969; x=1720959769; darn=lists.linux.dev; h=content-transfer-encoding:subject:from:to:content-language :user-agent:mime-version:date:message-id:from:to:cc:subject:date :message-id:reply-to; bh=L9sc60lciZAXb7QzPxcfPWmmHEtScDELqGwwdUh19ys=; b=c1pMmGYYSg41TedJDk6IXERYYNfgxNuKVONNYEDPCIpIti0YQvP3YfBMwof033sFzU 5cF/A4OmK8qvKZxTnUwI/oo6syf3S3Uk73peKkEaZgE7m+lqELqWUGBnro9O3OrHLBDY fl488a5I0hk/IDVUooVk10lxfhmcI6uiOrHX1KCtr/Jamwlmkh2FQB1AfXX7TdknnXw5 fchW0umr+p+PIs2qGGOGCuu83gt8lgXZ74zNjeBcXJyV7EQ5tuIxY1Qqy3nYqU2xHRkk 4Z6nglMNiG5GqY7orVTiFDOAqPWN4ej34fZofSkzgd7cquNalU1VBBZHIfsBMdDTUxqH AuPw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720354969; x=1720959769; h=content-transfer-encoding:subject:from:to:content-language :user-agent:mime-version:date:message-id:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=L9sc60lciZAXb7QzPxcfPWmmHEtScDELqGwwdUh19ys=; b=qt6BYXrzQPr0DRSFhqhh9xJm5Irq5Ha7lPjEY97f4+3i3B1cQoHniHBLshRg3DNmH2 5le3cqj1DrqewkqjxZ5p2HhiHRaymJ025tfXtFqcXoisKMg5ep88mPsv0+Rbe8HiX2VQ n7QOeIfKRhlh2gAIQEENHd9NExJ0RfdV45Xr3+Oe4GTi+VPZCVQj0Lv1Ua7mgHoV/nj7 Ivb6NzaQhLuPX5vBqa6yq/2Zv48+xBIRviYCuRRK78QL39B6mYaDQDLWsoT5ux3noBfb 72Aj8nY5E+AD1NElGou8f5CuuKgQ9v6HHHN5dU44Ann9fgpd1EXNXgrBTWDzqYjTmHbi 23WQ== X-Forwarded-Encrypted: i=1; AJvYcCXARM5b8PRMo19ZRoo8STzElhrt7AUSsZK97/gYHygs6vaFW/PsfCSfmnltaaB8CyFZRvMTFNtTrAT82wgRGLvycjv5R8d1UnzM X-Gm-Message-State: AOJu0Yzjlbxj62B6qQl0nGL8MGSDVMFC7NUKeq4+MvowzplPZobxETmb lEnauwEXVAxApM5SWByowTLo1O6XWPcc5WGX0gf0fqJ3WOv3A7Vy X-Google-Smtp-Source: AGHT+IFmQiydKHDg+5QZGpROqyuHJEfT81GJGQDnm9AdGvVwed+uKdBuMElrzWAWCTh1tNRjmQ/RXA== X-Received: by 2002:a17:906:5a84:b0:a77:cf09:9c5f with SMTP id a640c23a62f3a-a77cf099ce8mr425339766b.37.1720354968353; Sun, 07 Jul 2024 05:22:48 -0700 (PDT) Received: from [192.168.0.100] (014-189-172-081.dynamic.caiway.nl. [81.172.189.14]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a77c720a09dsm235355366b.218.2024.07.07.05.22.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 07 Jul 2024 05:22:48 -0700 (PDT) Message-ID: <1c6684f6-d3a8-4eaa-842d-c21fa2dd81c1@gmail.com> Date: Sun, 7 Jul 2024 14:22:47 +0200 Precedence: bulk X-Mailing-List: brcm80211@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US To: linux-wireless@vger.kernel.org, brcm80211@lists.linux.dev, brcm80211-dev-list.pdl@broadcom.com, arend.vanspriel@broadcom.com, nikolay.nikolov@bench.com From: Nikolay Nikolov Subject: [PATCH 1/1] wifi: brcm80211: brcmfmac: Prevent sdio bus going to sleep while transfering data Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Use mutex to prevent sdio bus to be put to sleep by the sdio_bus_watchdog while sdio dataworker handles sdio_dpc data transfers. Signed-off-by: Nikolay Nikolov --- drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c | 6 ++++++ 1 file changed, 6 insertions(+) --- diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c index 6b38d9de71af..26d0bce6cedc 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c @@ -524,6 +524,7 @@ struct brcmf_sdio { bool txglom; /* host tx glomming enable flag */ u16 head_align; /* buffer pointer alignment */ u16 sgentry_align; /* scatter-gather buffer alignment */ + struct mutex dpc_mutex; }; /* clkstate */ @@ -3724,6 +3725,7 @@ static void brcmf_sdio_bus_watchdog(struct brcmf_sdio *bus) } #endif /* DEBUG */ + mutex_lock(&bus->dpc_mutex); /* On idle timeout clear activity flag and/or turn off clock */ if (!bus->dpc_triggered) { rmb(); @@ -3748,6 +3750,7 @@ static void brcmf_sdio_bus_watchdog(struct brcmf_sdio *bus) } else { bus->idlecount = 0; } + mutex_unlock(&bus->dpc_mutex); } static void brcmf_sdio_dataworker(struct work_struct *work) @@ -3755,6 +3758,7 @@ static void brcmf_sdio_dataworker(struct work_struct *work) struct brcmf_sdio *bus = container_of(work, struct brcmf_sdio, datawork); + mutex_lock(&bus->dpc_mutex); bus->dpc_running = true; wmb(); while (READ_ONCE(bus->dpc_triggered)) { @@ -3763,6 +3767,7 @@ static void brcmf_sdio_dataworker(struct work_struct *work) bus->idlecount = 0; } bus->dpc_running = false; + mutex_unlock(&bus->dpc_mutex); if (brcmf_sdiod_freezing(bus->sdiodev)) { brcmf_sdiod_change_state(bus->sdiodev, BRCMF_SDIOD_DOWN); brcmf_sdiod_try_freeze(bus->sdiodev); @@ -4525,6 +4530,7 @@ struct brcmf_sdio *brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev) /* SR state */ bus->sr_enabled = false; + mutex_init(&bus->dpc_mutex); brcmf_dbg(INFO, "completed!!\n");