From patchwork Fri Oct 20 21:06:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Anderson X-Patchwork-Id: 13431181 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 9BA222FE0D for ; Fri, 20 Oct 2023 21:08:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="jjPP0R+Z" Received: from mail-pf1-x436.google.com (mail-pf1-x436.google.com [IPv6:2607:f8b0:4864:20::436]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BC9C010D8 for ; Fri, 20 Oct 2023 14:08:19 -0700 (PDT) Received: by mail-pf1-x436.google.com with SMTP id d2e1a72fcca58-68fb85afef4so1261346b3a.1 for ; Fri, 20 Oct 2023 14:08:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1697836099; x=1698440899; 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=bAHIdwVQAiU7foM+hKZA1xP7duO0xSFXmMfBzAEr0JE=; b=jjPP0R+Zvip59m9GnAgCjFOC5ZF15TLYAfIkxR04byd7FNrDKaiarIblamhi0ORbje xfpt1fG7hy8ApnKxT/ypaiehvhf0p3bgboxbvPk+hoTbhr/9w3u+w6Ismd0ejkv3FINH YHYzi0dF3D+B6L+LL2jSO0ht1U6tbHLAShq64= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697836099; x=1698440899; 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=bAHIdwVQAiU7foM+hKZA1xP7duO0xSFXmMfBzAEr0JE=; b=r9pzD/Eaydk/ck6mi/H1S+nlsmPxA7fIQpzvQwSzNId18YqYAodsrSW/JrYbdDjDck KKAdzakWBsJmyG9cqVBmPoRxekxntITu/F9lPsLNP0PBGGcxBlgos3sc5E89wilqPSfb RJmU8Xy3Afgkc+11v+JaiRNyeWp+KzKAaIPA22B7deM1j0KjroPjZJwVkxSrmd2DIxpb 7bh3GaOBCxmtR8BnqTf6FsRPUDSvFRMEFRo88Ty8g9TnLdBrkzdcNToZHMYGX5An9Fcg Li4tp7fns1GMrMavG9JAEqztzlIXUXfzdilBWNPmJo4YSe0WWYczTTNQqO6FY9Qpl67l LDrw== X-Gm-Message-State: AOJu0YwI4Nhm7Ryv8n5rk7XpdKKXFdLSWl1uxUaLSVc9f7NlQwUBUOVP pe4EpKsxoPqQ91BTLy0mOMk/kA== X-Google-Smtp-Source: AGHT+IEn6jcxkt9TyQiKUw23seFuVPHzoEYn+HWDkq+K/reiZe+dgtgWKedWHh/Hs0mkO3kxL0L5Iw== X-Received: by 2002:a05:6a00:1402:b0:693:3851:bd3e with SMTP id l2-20020a056a00140200b006933851bd3emr3272815pfu.3.1697836099153; Fri, 20 Oct 2023 14:08:19 -0700 (PDT) Received: from tictac2.mtv.corp.google.com ([2620:15c:9d:2:c078:ee4f:479f:8486]) by smtp.gmail.com with ESMTPSA id w14-20020aa7954e000000b00686b649cdd0sm1969278pfq.86.2023.10.20.14.08.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Oct 2023 14:08:18 -0700 (PDT) From: Douglas Anderson To: Jakub Kicinski , Hayes Wang , "David S . Miller" Cc: Edward Hill , Laura Nao , Alan Stern , Simon Horman , linux-usb@vger.kernel.org, Grant Grundler , Douglas Anderson , =?utf-8?q?Bj=C3=B8rn_Mork?= , Eric Dumazet , Paolo Abeni , linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v5 5/8] r8152: Check for unplug in rtl_phy_patch_request() Date: Fri, 20 Oct 2023 14:06:56 -0700 Message-ID: <20231020140655.v5.5.I300ed6c3269c77756bdd10dd0d6f97db85470186@changeid> X-Mailer: git-send-email 2.42.0.758.gaed0368e0e-goog In-Reply-To: <20231020210751.3415723-1-dianders@chromium.org> References: <20231020210751.3415723-1-dianders@chromium.org> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 Reviewed-by: Grant Grundler Reviewed-by: Florian Fainelli --- (no changes since v2) 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 656fe90734fc..9888bc43e903 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)