From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AH8x227g2UOSRLTx00xpd8mTwQ0DtSeS/EuCP/tDpSLs2K1eJ+tbI2GmZvQtIQSeFFC6muA3S+G4 ARC-Seal: i=1; a=rsa-sha256; t=1517591116; cv=none; d=google.com; s=arc-20160816; b=0B26jR7v1efJ9G/GmMp2u1+rbZTSm9gnZw97Wt+36Onkr8TQLOuAGWSJANPHd4DbrZ kGhArAw+ar8AeJiKmC9ttGZEZm/kesrBlHgtPGny+CpZZ8GAhr/JMURZIvZ4k8eyTOj+ /jK4H0qs96t/dSVd75JkRD+TRv2uvyqUE+xY19HbxV8xKAEGpiecP884jjY8rSIzZU/Z 4FQ4P7Yy6/fvmLLICt9yiGGyeZfRKVOgpRd7oCXNKIkp2E5ZC4kZUuRZQK6RlpiWEjTP BHl7x2AGBVo/VI6fncJjskdd5VI/pyPlHFis0YhvVGOB/Y6H0X9go8fEZLjeGgADomFY 6eug== 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=6+bSU8fIro0Z8xrSwZflLGQ8GvwHUf7jYKupcN0GpB4=; b=ayOt0j/6wrxlzwHZpZND/fyEqPfjr+m0fQw9wVgdzCwUaY5gafYek7mvinFVIoMCOq u//8kQoB23w5g9SSPkCtq0Y1m3tJ5DFlQYDThJDqWakrqt4RPijRvh5iW80K+zN3uVVV 8qkF9pr6EbyvDhkyW+GPoY48gsKi4Ieg0RUcWjzmD5JfcBQeygWbckg1+/Nf9c8omm2V dDmYIiTdDcloB/FAxFSDRKEI7x5PROGSuSx1GEhq15mX9f5kzpLQn57mkLYRCbE49XUa MHW8qsN1lG14sgTKFVtlps6EdR7xFLvWY40bks6oAQIQO5HQhXziGvTpskYEGY7cWrBk DfbA== 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 4.9 58/86] drm/bridge: tc358767: fix AUXDATAn registers access Date: Fri, 2 Feb 2018 17:58:18 +0100 Message-Id: <20180202140827.826456609@linuxfoundation.org> X-Mailer: git-send-email 2.16.1 In-Reply-To: <20180202140822.679101338@linuxfoundation.org> References: <20180202140822.679101338@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?1591309622015901921?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.9-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; } }