From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AH8x224wwVB80wtTRw0zm87JeA3ncztNG+pDB7P+UAn+XYzoCjiYMJFE0T9eofOe4J35ULwamsd1 ARC-Seal: i=1; a=rsa-sha256; t=1517591525; cv=none; d=google.com; s=arc-20160816; b=U5Sdksl1u14u5mQvaeEZ6qcR+BuMQNscMa6fbtFI5W92x/UTgBJnTr60HGY8GVFFK0 XzjpItlTQ3LyrHJW/JrgeUui7DYGE/WKsOXrT9SzxMncs72x5etJ599hvXjobmDQrl93 q1sBI6AvfzIuwZYbj02Zaed/tyl441FbrDwjjuSXnQYMfw1/MunohPO3rtzbPeJ1wZri rpGlCpLo2ouH/zdy7HVc7u95tFMtahWGDqXiiIXnN7DRhehZC/LMTiVXVJaYGmA7ff4R lChLNRvZU4BgyTi2XtAJyWTZDfIx9T1vbqQcrA5I8HWyfUiJEAIWGi7v/6INU0gUW5DC Icyw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:user-agent:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=2xSc7bMxTw9iuqgET+REEXzpADpOwIVHZ/JPIkODLAM=; b=SpgA6Ge5/HpZlZa+ZXMrNJ/1lvLAPYa2Ib6kerQWch7h9tobE4JTWqQgJwhEIqKudq hXC7URjWPUdxrSXSFF5F0FyZsx/ZyTgoCMKP0TUtzUcZZNkd8cafQKy4DGnv3I6ApMuq TITndfVK97BBkmkN7++SwK9/lyueAsENG+XqFoHmmDn5uPoqlhiUarX8/mnrIb/S77HC lhs3weUhkwM4wqQZk6LedYotFf48osLo20lYvtP2mR2aN/Qn8tu1Wok5yeoV0LF7yX8S TwS7d1aYMC789KP9RZuWvbLj0fdSfAg/iugG4/yjcEwHeLDSKdLjgSYrNhfc0g7ENCfG 4pDg== ARC-Authentication-Results: i=1; mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.71.90 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.71.90 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Philipp Zabel , Andrey Gusakov , Andrzej Hajda , Sasha Levin Subject: [PATCH 4.14 110/156] drm/bridge: tc358767: fix AUXDATAn registers access Date: Fri, 2 Feb 2018 17:58:11 +0100 Message-Id: <20180202140845.152664242@linuxfoundation.org> X-Mailer: git-send-email 2.16.1 In-Reply-To: <20180202140840.242829545@linuxfoundation.org> References: <20180202140840.242829545@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-LABELS: =?utf-8?b?IlxcU2VudCI=?= X-GMAIL-THRID: =?utf-8?q?1591309622015901921?= X-GMAIL-MSGID: =?utf-8?q?1591310051643158498?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Andrey Gusakov [ Upstream commit 9217c1abbc145a77d65c476cf2004a3df02104c7 ] First four bytes should go to DP0_AUXWDATA0. Due to bug if len > 4 first four bytes was writen to DP0_AUXWDATA1 and all data get shifted by 4 bytes. Fix it. Acked-by: Philipp Zabel Signed-off-by: Andrey Gusakov Signed-off-by: Andrzej Hajda Link: https://patchwork.freedesktop.org/patch/msgid/1510073785-16108-6-git-send-email-andrey.gusakov@cogentembedded.com Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/bridge/tc358767.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -318,7 +318,7 @@ static ssize_t tc_aux_transfer(struct dr tmp = (tmp << 8) | buf[i]; i++; if (((i % 4) == 0) || (i == size)) { - tc_write(DP0_AUXWDATA(i >> 2), tmp); + tc_write(DP0_AUXWDATA((i - 1) >> 2), tmp); tmp = 0; } }