From patchwork Sun Sep 29 18:59:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Grzeschik X-Patchwork-Id: 831833 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B2BEF73477 for ; Sun, 29 Sep 2024 18:59:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.203.201.7 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727636380; cv=none; b=HfnHpibk+Z0yg3IBolC6bcfuhdALOKBtsMuqqS6dA0pcOcn4TM7DOc7hcVaxmbiAWCaZpNWdAglMH9TRoa3XCkSCTH+OMu9lSyTFrUbaG8YnKzpt/2TYtZU8mdcu9SaDVy5hP4GvPBbRZWoUEBIL7BlkUrNDAfSN9sXsLL6to2w= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727636380; c=relaxed/simple; bh=kngrIUdohYDweYjrpeEtFY0IvoCnJzGSSuzWmk8HDPA=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=DXWfOVVP+AodU7xbtL8rRVucT9/YF58KekhdSZlHlDrrboPLqswT+Et8QjEV5gkCqU0xLQ8uSsWrHonOFjH0bwNl4q9Fp9HziSJ2/bTYLV+ER3U8b3KAo5jlW1IUcanf8u1iHtmL7pr6r4VPCu8/qx/u6QYDFaczJmdZPtID8ho= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de; spf=pass smtp.mailfrom=pengutronix.de; arc=none smtp.client-ip=185.203.201.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1suz8l-00053o-KL; Sun, 29 Sep 2024 20:59:31 +0200 Received: from [2a0a:edc0:0:1101:1d::ac] (helo=dude04.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1suz8l-002Ro2-0H; Sun, 29 Sep 2024 20:59:31 +0200 Received: from localhost ([::1] helo=dude04.red.stw.pengutronix.de) by dude04.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1suz8k-0029Vj-2v; Sun, 29 Sep 2024 20:59:30 +0200 From: Michael Grzeschik Date: Sun, 29 Sep 2024 20:59:21 +0200 Subject: [PATCH v6 1/9] usb: gadget: uvc: wake pump everytime we update the free list Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240403-uvc_request_length_by_interval-v6-1-08c05522e1f5@pengutronix.de> References: <20240403-uvc_request_length_by_interval-v6-0-08c05522e1f5@pengutronix.de> In-Reply-To: <20240403-uvc_request_length_by_interval-v6-0-08c05522e1f5@pengutronix.de> To: Laurent Pinchart , Daniel Scally , Greg Kroah-Hartman , Avichal Rakesh , Jayant Chowdhary Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, Michael Grzeschik X-Mailer: b4 0.12.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1174; i=m.grzeschik@pengutronix.de; h=from:subject:message-id; bh=kngrIUdohYDweYjrpeEtFY0IvoCnJzGSSuzWmk8HDPA=; b=owEBbQKS/ZANAwAKAb9pWET5cfSrAcsmYgBm+aOPn/vQOXvdVMsUJ4otY8xzduWcjdZ0nf18G 09B+JXftPmJAjMEAAEKAB0WIQQV2+2Fpbqd6fvv0Gi/aVhE+XH0qwUCZvmjjwAKCRC/aVhE+XH0 q64BD/98VAGE2/ELmPGAWkPbbsyPSY+nOyMVz9dZlQJ/qjoGLrQy8h9DwIZKsJacOyMnvstH4EK ijINEOd8ppAwZUF+fdIqcyS+zrT3yGhQ8ryD0GfTTrMEqa0PR2jJVjLzW8QE9PgEWwIXuRE+Tee /eFfVk6IgeKW+WCbCAFTFtTdokcNGvS+Uh+zU6HwglqY9zKAer/7N93xj8GF9TXjsEdX9h8yB/j aoi2hefgj+O2gUZvCTaemHfjnPaHJ4HYLOgT4oLShfL4X9pGzgRkIoU0DJ+p4VTtGI1V9Phu4Fk 4pjO3/N9h7xs/zwz8/4Kb7mE+CH4VkTxTUQjWE2Qy1854OKMPHkDYIAgrAcsjk0q+BL9VyEjKMa cW6jJArRS2q1wQnwBC7zjsZATaR7npdbAxlVSR59FsuKO7UXKiP+wR1YK5htWDqhdagDR+wfvoo /CvVoTwGcH8RG/QGjg1PWLBa1clKW+Bm4TO8fC5njPW5CEOhiStmoGoEFUnFh8W1W1YZJwrWpxv dGkokA0meiJJK4ww3aiq08aN60pF2qgIn/uzRTJ3G6ZO4JLlIjEpjEWitQPTSLUYKzQ0SyvFywI pZrjRFjzBMvb5gY92YRE5nSA7ZcQ3tleOctaKkuezV9ncez5klEdEOJc5cQIIInLr5JPY+9Xvp/ dpqqj/t5G4Jq3Cg== X-Developer-Key: i=m.grzeschik@pengutronix.de; a=openpgp; fpr=957BC452CE953D7EA60CF4FC0BE9E3157A1E2C64 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: m.grzeschik@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-usb@vger.kernel.org Since the req_free list will updated if enqueuing one request was not possible it will be added back to the free list. With every available free request in the queue it is a valid case for the pump worker to use it and continue the pending bufferdata into requests for the req_ready list. Fixes: 6acba0345b68 ("usb:gadget:uvc Do not use worker thread to pump isoc usb requests") Signed-off-by: Michael Grzeschik --- v5 -> v6: - v1 -> v5: - new patch --- drivers/usb/gadget/function/uvc_video.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/gadget/function/uvc_video.c b/drivers/usb/gadget/function/uvc_video.c index a9edd60fbbf77..48fd8d3c50b0c 100644 --- a/drivers/usb/gadget/function/uvc_video.c +++ b/drivers/usb/gadget/function/uvc_video.c @@ -480,6 +480,10 @@ uvc_video_complete(struct usb_ep *ep, struct usb_request *req) * up later. */ list_add_tail(&to_queue->list, &video->req_free); + /* + * There is a new free request - wake up the pump. + */ + queue_work(video->async_wq, &video->pump); } spin_unlock_irqrestore(&video->req_lock, flags);