From patchwork Wed Oct 14 14:52:25 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 269852 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=-6.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 A45BCC43457 for ; Wed, 14 Oct 2020 15:19:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4DDD121582 for ; Wed, 14 Oct 2020 15:19:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="UMYLaZSO"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="EIg7PRzW" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389141AbgJNPTx (ORCPT ); Wed, 14 Oct 2020 11:19:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39138 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731815AbgJNPTA (ORCPT ); Wed, 14 Oct 2020 11:19:00 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5D1A6C0613D3; Wed, 14 Oct 2020 08:19:00 -0700 (PDT) Message-Id: <20201014145728.208701440@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1602688738; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=qs5N10ZLTGbjgyqw4BmEWE+XbOxUwK6mZBaXBjRANBo=; b=UMYLaZSOy0GpTwQeHlY9AipRzXKOvrZZGM3yKp63B8UTfOYn2rYdMbfoXjBB4mXq0Ro39S 1vH35yUsVxfuFUGccdmhMdaXNyRgEYvecU7U+suliQvFPAs0hvf3rQSHBY89hERxb0VHsI qLXOLI6t6YymlrMnRAp743PQ+HLacfEONNcyBw2ip1dGxjWtxK1Cc4yjBr2sY57WVNNPZM phjr4vSEf1VDEVamzb54vNTPPR7F0gIXWmiOesaCtd7baeowmuXLhsFzm9djdjEDwPcUmx gdLWFORMwtGnUTKl3SYq0kwfHzRrjfGUFnZdQp3bzmb5w/2qK73MRqk4We9d3A== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1602688738; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=qs5N10ZLTGbjgyqw4BmEWE+XbOxUwK6mZBaXBjRANBo=; b=EIg7PRzWKN6KgYm+QKT/5U+W602LPE6QV0rpvm503A0MvjtEEQaLo3mbotMG0QCa8XlUQI +hARBem0/GFOKrCg== Date: Wed, 14 Oct 2020 16:52:25 +0200 From: Thomas Gleixner To: LKML Cc: Peter Zijlstra , "Ahmed S. Darwish" , Sebastian Andrzej Siewior , Felipe Balbi , Greg Kroah-Hartman , linux-usb@vger.kernel.org, Thomas Winischhofer , Johan Hovold , Mathias Nyman , Valentina Manea , Shuah Khan , Alan Stern , linux-omap@vger.kernel.org, Kukjin Kim , Krzysztof Kozlowski , linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, Duncan Sands Subject: [patch 10/12] usb: gadget: udc: Remove in_interrupt()/in_irq() from comments References: <20201014145215.518912759@linutronix.de> MIME-Version: 1.0 Content-transfer-encoding: 8-bit Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: Ahmed S. Darwish The usage of in_irq()/in_interrupt() in drivers is phased out for various reasons. The context description for usb_gadget_giveback_request() is misleading as in_interupt() means: hard interrupt or soft interrupt or bottom half disabled regions. But it's also invoked from task context when endpoints are torn down. Remove it as it's more confusing than helpful. Replace also the in_irq() comment with plain text. Signed-off-by: Ahmed S. Darwish Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Thomas Gleixner Cc: Felipe Balbi Cc: Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org --- drivers/usb/gadget/udc/core.c | 2 -- drivers/usb/gadget/udc/dummy_hcd.c | 5 +++-- 2 files changed, 3 insertions(+), 4 deletions(-) --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -894,8 +894,6 @@ EXPORT_SYMBOL_GPL(usb_gadget_unmap_reque * @ep: the endpoint to be used with with the request * @req: the request being given back * - * Context: in_interrupt() - * * This is called by device controller drivers in order to return the * completed request back to the gadget layer. */ --- a/drivers/usb/gadget/udc/dummy_hcd.c +++ b/drivers/usb/gadget/udc/dummy_hcd.c @@ -1754,8 +1754,9 @@ static int handle_control_request(struct return ret_val; } -/* drive both sides of the transfers; looks like irq handlers to - * both drivers except the callbacks aren't in_irq(). +/* drive both sides of the transfers; looks like irq handlers to both + * drivers except that the callbacks are invoked from soft interrupt + * context. */ static void dummy_timer(struct timer_list *t) {