From patchwork Tue Sep 22 11:21:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oliver Neukum X-Patchwork-Id: 11792279 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 08DBC618 for ; Tue, 22 Sep 2020 11:21:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D3D31238A1 for ; Tue, 22 Sep 2020 11:21:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b="T9B+ooHd" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726573AbgIVLVx (ORCPT ); Tue, 22 Sep 2020 07:21:53 -0400 Received: from mx2.suse.de ([195.135.220.15]:37422 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726559AbgIVLVw (ORCPT ); Tue, 22 Sep 2020 07:21:52 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1600773711; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:in-reply-to:in-reply-to:references:references; bh=enkvzSACilXPdBEKnE+T7BwCxIvLK9Ib/5smmf0iTFA=; b=T9B+ooHdqOf/Dns7WNYf+Lzag2Vui9Gj26jUkYCZvUEjnt8/xrKcYqjGVPJ3bBTIby6qZc tip5xlJ4EGJhC/CnyTx/HRwEWD6KyHzf4q/iY9c1P5/1895GQEVga2REvRmq7GoHzIQDuz E1GkUNjSJxEq93ymNRyGFrInssfpE40= Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id B228EAE35; Tue, 22 Sep 2020 11:22:27 +0000 (UTC) From: Oliver Neukum To: penguin-kernel@i-love.sakura.ne.jp, bjorn@mork.no, linux-usb@vger.kernel.org Cc: Oliver Neukum Subject: [RFC 5/7] CDC-WDM: correct error reporting in write() Date: Tue, 22 Sep 2020 13:21:24 +0200 Message-Id: <20200922112126.16919-6-oneukum@suse.com> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20200922112126.16919-1-oneukum@suse.com> References: <20200922112126.16919-1-oneukum@suse.com> Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org In case our wait was interrupted by a disconnect, we should report that. Signed-off-by: Oliver Neukum --- drivers/usb/class/cdc-wdm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index 5fb855404403..242f83118208 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -396,6 +396,9 @@ static ssize_t wdm_write if (test_bit(WDM_RESETTING, &desc->flags)) r = -EIO; + if (test_bit(WDM_DISCONNECTING, &desc->flags)) + r = -ENODEV; + if (r < 0) { rv = r; goto out_free_mem_pm;