linux-kernel - [PATCH 6/6] Revert "arm64: dts: renesas: r8a77995: add DMA for SCIF2"

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20190504004258.23574-7-erosca@de.adit-jv.com>
Date:   Sat,  4 May 2019 02:42:58 +0200
From:   Eugeniu Rosca <roscaeugeniu@...il.com>
To:     Geert Uytterhoeven <geert+renesas@...der.be>,
        Simon Horman <horms+renesas@...ge.net.au>,
        Chris Brandt <chris.brandt@...esas.com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Ulrich Hecht <ulrich.hecht+renesas@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     "George G . Davis" <george_davis@...tor.com>,
        Andy Lowe <andy_lowe@...tor.com>,
        linux-renesas-soc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Magnus Damm <magnus.damm@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Eugeniu Rosca <erosca@...adit-jv.com>,
        Eugeniu Rosca <roscaeugeniu@...il.com>
Subject: [PATCH 6/6] Revert "arm64: dts: renesas: r8a77995: add DMA for SCIF2"

This reverts commit af2ea3df851ffa68ad07ff59d4dabadbf33b45ef.

Both empirically and based on the existing documentation, it looks like
SCIF2 does not support DMA. Let's disable it. Full reasoning is given in
commit ("Revert "arm64: dts: renesas: r8a7796: Enable DMA for SCIF2"").

Fixes: af2ea3df851ffa ("arm64: dts: renesas: r8a77995: add DMA for SCIF2")
Signed-off-by: Eugeniu Rosca <erosca@...adit-jv.com>
---
 arch/arm64/boot/dts/renesas/r8a77995.dtsi | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/arm64/boot/dts/renesas/r8a77995.dtsi b/arch/arm64/boot/dts/renesas/r8a77995.dtsi
index 5bf3af246e14..bd3ac5d00b2e 100644
--- a/arch/arm64/boot/dts/renesas/r8a77995.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77995.dtsi
@@ -740,9 +740,6 @@
 				 <&cpg CPG_CORE R8A77995_CLK_S3D1C>,
 				 <&scif_clk>;
 			clock-names = "fck", "brg_int", "scif_clk";
-			dmas = <&dmac1 0x13>, <&dmac1 0x12>,
-			       <&dmac2 0x13>, <&dmac2 0x12>;
-			dma-names = "tx", "rx", "tx", "rx";
 			power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
 			resets = <&cpg 310>;
 			status = "disabled";
-- 
2.21.0