From patchwork Thu Jan 21 05:04:17 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Anderson X-Patchwork-Id: 8077521 Return-Path: X-Original-To: patchwork-linux-rockchip@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 37DDE9F1CC for ; Thu, 21 Jan 2016 05:05:42 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 49644205E4 for ; Thu, 21 Jan 2016 05:05:41 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4C5FF20374 for ; Thu, 21 Jan 2016 05:05:40 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1aM7RD-0000j9-PC; Thu, 21 Jan 2016 05:05:39 +0000 Received: from mail-pa0-x230.google.com ([2607:f8b0:400e:c03::230]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1aM7R2-0000Ys-IK for linux-rockchip@lists.infradead.org; Thu, 21 Jan 2016 05:05:31 +0000 Received: by mail-pa0-x230.google.com with SMTP id cy9so16728038pac.0 for ; Wed, 20 Jan 2016 21:05:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=6Vihq8mLa3QNg5/IHuU3uRbbr7f6taeW1SGdPoyXKps=; b=LGwlgGofP/RP8wejGoShSTcVsECtfOMqf+w46d4bKdewryeosbRT1PHgRVgpZNzYJ8 z/NMC4u0niGZCXuSVht01MfCdolrz6I53+EiBvewNhnjBrIJbTONB+QQmxN7/4sCebDt kFR9BflbnQWGw2ciWDJJQQhkvH2XjJc/m8q7c= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=6Vihq8mLa3QNg5/IHuU3uRbbr7f6taeW1SGdPoyXKps=; b=JR6mt5nCigpbnIgl0yCZ2La3sMX2ItcEEjoEjStufrf6fOtkc9WdHOkIq7gpS+Gvn3 VoZm0LWYbS14Iuz0Y4O6Qh48Msbb2ZGttZDaVmmhIZjoP5nYouS9JyOfLMvcinpUPFCo 3b5FGwY4VMPeQuKv3SCzAdusoVZ6vef1f3AvWb4O24spv2uHd58tqPzuuQzyxHVrplJZ /gYK2U+MQzm8byLzocUWxl2qzhXLr2wX+Wh++JrKaerD66sTOtzgdcA4QbA0nHSFe5AN PY92LggRZ1B8tCmp4ng3/2Q35RfMm5cl/vPqEK7tqODEeT0bbSaAJoDyMDN4YfSs7tWB czog== X-Gm-Message-State: ALoCoQnlvZ+T/rcaZHAomVMm18D9pmnVHVuV2jCzAycsK2+cpECW6Su/R8iy3CD9eT0LFD59k6b5VO1uk6ccQwzK+Hg90Si02g== X-Received: by 10.66.100.163 with SMTP id ez3mr58569733pab.5.1453352708284; Wed, 20 Jan 2016 21:05:08 -0800 (PST) Received: from tictac.mtv.corp.google.com ([172.22.65.76]) by smtp.gmail.com with ESMTPSA id z28sm52255589pfi.19.2016.01.20.21.05.07 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 20 Jan 2016 21:05:07 -0800 (PST) From: Douglas Anderson To: John Youn , balbi@ti.com, kever.yang@rock-chips.com Subject: [PATCH v4 06/21] usb: dwc2: host: Always add to the tail of queues Date: Wed, 20 Jan 2016 21:04:17 -0800 Message-Id: <1453352672-27890-7-git-send-email-dianders@chromium.org> X-Mailer: git-send-email 2.7.0.rc3.207.g0ac5344 In-Reply-To: <1453352672-27890-1-git-send-email-dianders@chromium.org> References: <1453352672-27890-1-git-send-email-dianders@chromium.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160120_210528_822319_BD35B532 X-CRM114-Status: GOOD ( 14.91 ) X-Spam-Score: -2.7 (--) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: gregory.herrero@intel.com, =?UTF-8?q?Heiko=20St=C3=BCbner?= , johnyoun@synopsys.com, gregkh@linuxfoundation.org, ming.lei@canonical.com, linux-usb@vger.kernel.org, Douglas Anderson , linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, yousaf.kaukab@intel.com, stern@rowland.harvard.edu, Julius Werner , dinguyen@opensource.altera.com MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED,RP_MATCHES_RCVD,T_DKIM_INVALID,UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The queues the the dwc2 host controller used are truly queues. That means FIFO or first in first out. Unfortunately though the code was iterating through these queues starting from the head, some places in the code was adding things to the queue by adding at the head instead of the tail. That means last in first out. Doh. Go through and just always add to the tail. Doing this makes things much happier when I've got: * 7-port USB 2.0 Single-TT hub * - Microsoft 2.4 GHz Transceiver v7.0 dongle * - Jabra speakerphone playing music Signed-off-by: Douglas Anderson --- Changes in v4: - Always add to the tail of queues new for v4. Changes in v3: None Changes in v2: None drivers/usb/dwc2/hcd.c | 11 ++++++----- drivers/usb/dwc2/hcd_ddma.c | 4 ++-- drivers/usb/dwc2/hcd_intr.c | 4 ++-- drivers/usb/dwc2/hcd_queue.c | 6 ++++-- 4 files changed, 14 insertions(+), 11 deletions(-) diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 7783c8ba0173..d2daaea88d91 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -969,7 +969,8 @@ enum dwc2_transaction_type dwc2_hcd_select_transactions( * periodic assigned schedule */ qh_ptr = qh_ptr->next; - list_move(&qh->qh_list_entry, &hsotg->periodic_sched_assigned); + list_move_tail(&qh->qh_list_entry, + &hsotg->periodic_sched_assigned); ret_val = DWC2_TRANSACTION_PERIODIC; } @@ -1002,8 +1003,8 @@ enum dwc2_transaction_type dwc2_hcd_select_transactions( * non-periodic active schedule */ qh_ptr = qh_ptr->next; - list_move(&qh->qh_list_entry, - &hsotg->non_periodic_sched_active); + list_move_tail(&qh->qh_list_entry, + &hsotg->non_periodic_sched_active); if (ret_val == DWC2_TRANSACTION_NONE) ret_val = DWC2_TRANSACTION_NON_PERIODIC; @@ -1176,8 +1177,8 @@ static void dwc2_process_periodic_channels(struct dwc2_hsotg *hsotg) * Move the QH from the periodic assigned schedule to * the periodic queued schedule */ - list_move(&qh->qh_list_entry, - &hsotg->periodic_sched_queued); + list_move_tail(&qh->qh_list_entry, + &hsotg->periodic_sched_queued); /* done queuing high bandwidth */ hsotg->queuing_high_bandwidth = 0; diff --git a/drivers/usb/dwc2/hcd_ddma.c b/drivers/usb/dwc2/hcd_ddma.c index 36606fc33c0d..16b261cfa92d 100644 --- a/drivers/usb/dwc2/hcd_ddma.c +++ b/drivers/usb/dwc2/hcd_ddma.c @@ -1327,8 +1327,8 @@ void dwc2_hcd_complete_xfer_ddma(struct dwc2_hsotg *hsotg, dwc2_hcd_qh_unlink(hsotg, qh); } else { /* Keep in assigned schedule to continue transfer */ - list_move(&qh->qh_list_entry, - &hsotg->periodic_sched_assigned); + list_move_tail(&qh->qh_list_entry, + &hsotg->periodic_sched_assigned); /* * If channel has been halted during giveback of urb * then prevent any new scheduling. diff --git a/drivers/usb/dwc2/hcd_intr.c b/drivers/usb/dwc2/hcd_intr.c index 99efc2bd1617..2c521c00e5e0 100644 --- a/drivers/usb/dwc2/hcd_intr.c +++ b/drivers/usb/dwc2/hcd_intr.c @@ -143,7 +143,7 @@ static void dwc2_sof_intr(struct dwc2_hsotg *hsotg) * Move QH to the ready list to be executed next * (micro)frame */ - list_move(&qh->qh_list_entry, + list_move_tail(&qh->qh_list_entry, &hsotg->periodic_sched_ready); } tr_type = dwc2_hcd_select_transactions(hsotg); @@ -794,7 +794,7 @@ static void dwc2_halt_channel(struct dwc2_hsotg *hsotg, * halt to be queued when the periodic schedule is * processed. */ - list_move(&chan->qh->qh_list_entry, + list_move_tail(&chan->qh->qh_list_entry, &hsotg->periodic_sched_assigned); /* diff --git a/drivers/usb/dwc2/hcd_queue.c b/drivers/usb/dwc2/hcd_queue.c index e0933a9dfad7..bc632a72f611 100644 --- a/drivers/usb/dwc2/hcd_queue.c +++ b/drivers/usb/dwc2/hcd_queue.c @@ -732,9 +732,11 @@ void dwc2_hcd_qh_deactivate(struct dwc2_hsotg *hsotg, struct dwc2_qh *qh, dwc2_frame_num_le(qh->sched_frame, frame_number)) || (hsotg->core_params->uframe_sched <= 0 && qh->sched_frame == frame_number)) - list_move(&qh->qh_list_entry, &hsotg->periodic_sched_ready); + list_move_tail(&qh->qh_list_entry, + &hsotg->periodic_sched_ready); else - list_move(&qh->qh_list_entry, &hsotg->periodic_sched_inactive); + list_move_tail(&qh->qh_list_entry, + &hsotg->periodic_sched_inactive); } /**