From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 861961FB4 for ; Fri, 3 Feb 2023 10:19:54 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 029E2C4339E; Fri, 3 Feb 2023 10:19:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1675419594; bh=E7ILEv6xYLIze7BuDctwewhya2kxi7QeYBzfDzeccc4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GCxrAT5GQfiC1P5bHibB72g2Yq0l97nx1JK0kEbCnR3A6CVyo4KUDCL293YInKEzA Wk18MJ1MKOvCZ/Oc2osvit1ujkgT2p/u5j0/2pwLeC6g844lF5aAcZ6MaRuUkhNCxw vMaSl+ggek/OZufOT8cn2ITmLx1KsBSrD4sIDN5g= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yoshihiro Shimoda , Sergey Shtylyov , "David S. Miller" , Sasha Levin Subject: [PATCH 4.19 55/80] net: ravb: Fix possible hang if RIS2_QFF1 happen Date: Fri, 3 Feb 2023 11:12:49 +0100 Message-Id: <20230203101017.546752261@linuxfoundation.org> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230203101015.263854890@linuxfoundation.org> References: <20230203101015.263854890@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Yoshihiro Shimoda [ Upstream commit f3c07758c9007a6bfff5290d9e19d3c41930c897 ] Since this driver enables the interrupt by RIC2_QFE1, this driver should clear the interrupt flag if it happens. Otherwise, the interrupt causes to hang the system. Note that this also fix a minor coding style (a comment indentation) around the fixed code. Fixes: c156633f1353 ("Renesas Ethernet AVB driver proper") Signed-off-by: Yoshihiro Shimoda Reviewed-by: Sergey Shtylyov Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/renesas/ravb_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index ff374d0d80a7..a1906804c139 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -738,14 +738,14 @@ static void ravb_error_interrupt(struct net_device *ndev) ravb_write(ndev, ~(EIS_QFS | EIS_RESERVED), EIS); if (eis & EIS_QFS) { ris2 = ravb_read(ndev, RIS2); - ravb_write(ndev, ~(RIS2_QFF0 | RIS2_RFFF | RIS2_RESERVED), + ravb_write(ndev, ~(RIS2_QFF0 | RIS2_QFF1 | RIS2_RFFF | RIS2_RESERVED), RIS2); /* Receive Descriptor Empty int */ if (ris2 & RIS2_QFF0) priv->stats[RAVB_BE].rx_over_errors++; - /* Receive Descriptor Empty int */ + /* Receive Descriptor Empty int */ if (ris2 & RIS2_QFF1) priv->stats[RAVB_NC].rx_over_errors++; -- 2.39.0