From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable 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 28DF5C433DF for ; Mon, 8 Jun 2020 23:09:59 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9455F20C09 for ; Mon, 8 Jun 2020 23:09:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="Qw225oKv" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9455F20C09 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 49gpql6SDLzDqQr for ; Tue, 9 Jun 2020 09:09:55 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=198.145.29.99; helo=mail.kernel.org; envelope-from=sashal@kernel.org; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=kernel.org Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=default header.b=Qw225oKv; dkim-atps=neutral Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 49gpmL4kKxzDqQk for ; Tue, 9 Jun 2020 09:06:58 +1000 (AEST) Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 40E6720842; Mon, 8 Jun 2020 23:06:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591657616; bh=l4UrxZfPytW7PlaB2VeAq30RXCOzD1wa7DQI7P+EKhQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Qw225oKv1tBngdkVT2YvDqZlHfZBpcNREI7ipI6UPfl9PXNVki0m6kAhUmTywou3O UQj5JgYkHpOzJ8VOPgcD07vEdRB2IZkQi2+qJL6Ib68fY2K5RNDdDvt/PZXbtzuE7w 90vxWZFDKQqb0CvzhsnwxVQ5NAmC7ykz8dZPDuHA= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 5.7 038/274] soc: fsl: dpio: properly compute the consumer index Date: Mon, 8 Jun 2020 19:02:11 -0400 Message-Id: <20200608230607.3361041-38-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200608230607.3361041-1-sashal@kernel.org> References: <20200608230607.3361041-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sasha Levin , Li Yang , Ioana Ciornei , linuxppc-dev@lists.ozlabs.org, "David S . Miller" , linux-arm-kernel@lists.infradead.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Ioana Ciornei [ Upstream commit 7596ac9d19a9df25707ecaac0675881f62dd8c18 ] Mask the consumer index before using it. Without this, we would be writing frame descriptors beyond the ring size supported by the QBMAN block. Fixes: 3b2abda7d28c ("soc: fsl: dpio: Replace QMAN array mode with ring mode enqueue") Signed-off-by: Ioana Ciornei Acked-by: Li Yang Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/soc/fsl/dpio/qbman-portal.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/soc/fsl/dpio/qbman-portal.c b/drivers/soc/fsl/dpio/qbman-portal.c index 804b8ba9bf5c..23a1377971f4 100644 --- a/drivers/soc/fsl/dpio/qbman-portal.c +++ b/drivers/soc/fsl/dpio/qbman-portal.c @@ -669,6 +669,7 @@ int qbman_swp_enqueue_multiple_direct(struct qbman_swp *s, eqcr_ci = s->eqcr.ci; p = s->addr_cena + QBMAN_CENA_SWP_EQCR_CI; s->eqcr.ci = qbman_read_register(s, QBMAN_CINH_SWP_EQCR_CI); + s->eqcr.ci &= full_mask; s->eqcr.available = qm_cyc_diff(s->eqcr.pi_ring_size, eqcr_ci, s->eqcr.ci); -- 2.25.1