From patchwork Wed Oct 4 19:24:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Anderson X-Patchwork-Id: 13409402 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 4C48C224C3 for ; Wed, 4 Oct 2023 19:26:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="aVnDf9y9" Received: from mail-pf1-x42f.google.com (mail-pf1-x42f.google.com [IPv6:2607:f8b0:4864:20::42f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 658FCEA for ; Wed, 4 Oct 2023 12:26:52 -0700 (PDT) Received: by mail-pf1-x42f.google.com with SMTP id d2e1a72fcca58-690ba63891dso131449b3a.2 for ; Wed, 04 Oct 2023 12:26:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1696447612; x=1697052412; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=uvVPnlQORTCK7kqZ53cdR5dJ01wpTJ+M1zt/QBCKOzQ=; b=aVnDf9y9ppcLZrN0TfKGyYX1Agu3ULIUVQcZD0//g5CNVy8EK8vseFYuKlT5OtvBq7 w2ThnvRjVQLSH4Jh03j4SDvO6avZNJwmQFxTPCsZhvToA12XzvFcHSfXbLesNrJVa/MS gCw/fkN29F1tJmDV5lQ0OISzxdQCgt7V/4dHk= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696447612; x=1697052412; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=uvVPnlQORTCK7kqZ53cdR5dJ01wpTJ+M1zt/QBCKOzQ=; b=KfmPemKu0QBofQBSVohwVdxQHveL6m8qLaJUVvxoTZvQQfp/Jf9nL1Bjy4mEECxCj4 Z1LXm1Fvb+FsFzyx/2MQOwYPplysalnKgyqJHtgeTSjuq9sYYwC08sng+w7TbUrkdqm7 eARJN9WqN8cLVeZ9TC/DL6OrdlUnYB9TQZg0Vz9sT3qT73aRGLUm1oV2a0Y4A/xSzKHv 7Bv3E3sRT2WyDfCiWsjhYI62PMiK3s+wxhBKXDi5dUh5lJXgbFapjVQ+0irzT1eYDKqW GZyXtMLLB6d5bWTNHNEnRIa46TcKFktNM6hPao2dO/QcGqC/OlaO6PySgFzep5Rm3sqy I2Aw== X-Gm-Message-State: AOJu0YyPUAWyGMwfNrk3bi67Qc/ni88uF2k+7PtKk8QBHqVZuqslLdVd t1BH5iebMH7m/CWvUcK0czeGjg== X-Google-Smtp-Source: AGHT+IGNHTwRI7vfmNQwD3lLL9cQeBWB7/sSsJb5Q+btfuk283ZdK7ymWVQN2uz9BobRw7b9uN7UmA== X-Received: by 2002:a05:6a21:6811:b0:15e:b8a1:57b0 with SMTP id wr17-20020a056a21681100b0015eb8a157b0mr2585287pzb.39.1696447611832; Wed, 04 Oct 2023 12:26:51 -0700 (PDT) Received: from tictac2.mtv.corp.google.com ([2620:15c:9d:2:9cce:13a8:f2b8:b799]) by smtp.gmail.com with ESMTPSA id d190-20020a6336c7000000b0057c29fec795sm3649151pga.37.2023.10.04.12.26.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Oct 2023 12:26:51 -0700 (PDT) From: Douglas Anderson To: Jakub Kicinski , Hayes Wang , "David S . Miller" Cc: linux-usb@vger.kernel.org, Alan Stern , Grant Grundler , Edward Hill , Douglas Anderson , =?utf-8?q?Bj=C3=B8rn_Mork?= , Eric Dumazet , Paolo Abeni , Simon Horman , linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v2 2/5] r8152: Check for unplug in rtl_phy_patch_request() Date: Wed, 4 Oct 2023 12:24:39 -0700 Message-ID: <20231004122435.v2.2.I300ed6c3269c77756bdd10dd0d6f97db85470186@changeid> X-Mailer: git-send-email 2.42.0.582.g8ccd20d70d-goog In-Reply-To: <20231004192622.1093964-1-dianders@chromium.org> References: <20231004192622.1093964-1-dianders@chromium.org> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net If the adapter is unplugged while we're looping in rtl_phy_patch_request() we could end up looping for 10 seconds (2 ms * 5000 loops). Add code similar to what's done in other places in the driver to check for unplug and bail. Signed-off-by: Douglas Anderson --- Changes in v2: - ("Check for unplug in rtl_phy_patch_request()") new for v2. drivers/net/usb/r8152.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c index 482957beae66..fff2f9e67b5f 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -4046,6 +4046,9 @@ static int rtl_phy_patch_request(struct r8152 *tp, bool request, bool wait) for (i = 0; wait && i < 5000; i++) { u32 ocp_data; + if (test_bit(RTL8152_UNPLUG, &tp->flags)) + break; + usleep_range(1000, 2000); ocp_data = ocp_reg_read(tp, OCP_PHY_PATCH_STAT); if ((ocp_data & PATCH_READY) ^ check)