From patchwork Mon Oct 19 10:06:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 287505 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 DF50FC4363D for ; Mon, 19 Oct 2020 10:18:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7EEE622268 for ; Mon, 19 Oct 2020 10:18:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="4lpNzGZt"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="L1BAx4Oy" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729452AbgJSKSW (ORCPT ); Mon, 19 Oct 2020 06:18:22 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:58876 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729285AbgJSKST (ORCPT ); Mon, 19 Oct 2020 06:18:19 -0400 Message-Id: <20201019101110.944939915@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1603102697; 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=CglHTuol1LH6Rq9Arw6I3q0kZXSSc/D44FpLqZfI5WA=; b=4lpNzGZte+JbLXJ83VGLllmO8p7ZgJPUbn2pEj3AWBlV6Kr6kMkordF9yNYiD+J0YfMNXF WrlseHROLQU+l/lbqigi2qTk9VAJ5y929pArYCx8cDTQAbouSa8PoPonAE8JjMfp1PBvEa chWrp8n1QbIhLVdUVFfL5aSRuMaJZJS8TTFH9PSpLmIHnfKarImStpf087juZuVGvW9vpy d8B+uITbEjquNSdDef0bc5zON2rSBuX0oqlrKnMDzU69dISQhvYlJeHwTtqk2u140cDa/H 3fgsgfkIGUmNcjOiSHyfjChDmTDZqoKfiozdWtZ8cgBRXPi6/SvEdu54WiqWbQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1603102697; 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=CglHTuol1LH6Rq9Arw6I3q0kZXSSc/D44FpLqZfI5WA=; b=L1BAx4OybAp6bDVli4bT4V41G4OGiBnmrb1bmCjWXg2vrs6Qc4FM9XNkkoVzYxoojOoBkj 1uEPNEpJBDmssyCw== Date: Mon, 19 Oct 2020 12:06:42 +0200 From: Thomas Gleixner To: LKML Cc: Peter Zijlstra , "Ahmed S. Darwish" , Sebastian Andrzej Siewior , Duncan Sands , 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, Felipe Balbi Subject: [patch V2 13/13] usb: atm: Replace in_interrupt() usage in comment References: <20201019100629.419020859@linutronix.de> MIME-Version: 1.0 Content-transfer-encoding: 8-bit Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org in_interrupt() is a pretty vague context description as it means: hard interrupt, soft interrupt or bottom half disabled regions. Replace the vague comment with a proper reasoning why spin_lock_irqsave() needs to be used. Signed-off-by: Ahmed S. Darwish Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Thomas Gleixner Cc: Duncan Sands Cc: Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org Signed-off-by: Duncan Sands --- drivers/usb/atm/usbatm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/usb/atm/usbatm.c +++ b/drivers/usb/atm/usbatm.c @@ -249,7 +249,7 @@ static void usbatm_complete(struct urb * /* vdbg("%s: urb 0x%p, status %d, actual_length %d", __func__, urb, status, urb->actual_length); */ - /* usually in_interrupt(), but not always */ + /* Can be invoked from task context, protect against interrupts */ spin_lock_irqsave(&channel->lock, flags); /* must add to the back when receiving; doesn't matter when sending */