From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AG47ELsDYpsX3rB4OpCUXJ73WdAH4e5f7UoXe6BMyP8h/2pke8+Pvh7o5JJe0nQ91nH9AQnokcp6 ARC-Seal: i=1; a=rsa-sha256; t=1520641272; cv=none; d=google.com; s=arc-20160816; b=Hvnh6LPYgwbQDwHdgEp3E67EAp3zs9JRAyxMrxOGWKdhiY9i89p/WJfG1Kl+NO6iEk tVXgtQT1GBEQnTFfECkwNW42ICQVkwM+hdxBGQg6+ZIRBmPcUsnVZIOG4I0635jdBO0n szYOsCHtlpfHGBUe8DQ6YqvybfQzf67bz5s0/Ulgh62v30o15hYIVT/l4sYkivDoWzvZ r6pPcECupbfJT7cmyl8a9+8AdX6VTmXSOTMHFVQumZjqyLm5kZfrgQJ03wWo8ZLcQ2HS W7hp02Usz51wzOyOMSjMe3kYTG2r+/yJHWfjR9jae7QtDRVd07p8/K26xedurk1oSasQ agJA== 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=Qtxd+m3LGXcFYl/3PP21Z2vYGeA9rOixbjfvrMf70Ws=; b=lA5DYecXySxEdCthMp20QElqFqwEIaw8VYMs7OcvGnGCGo1/Da7CfM/FIZ70Cv1x41 dw50QTzESkQcusT5hDlRWdZBfyGnSsqwXQGquZ9WSehj4EOl64sKX5vZs7qXfxedcMVx +o/NXXapjQjY96szoWJ45ThXRVmQWzh5DvpCW7Q6pkIeucB7W8OUD3oMrHJlQbzrVe2h uVbdTvathknkzh4DqLUrPRWXiij9Ny0YvsV11TuUXFpz47FWXvDjhBqZaxLGA/uEvyai gtwjSRM7/ltd87zI3bIGp2+a4HZqWIiysGB0RVjbzuD0jxzgMXY7b8iKMDddeBR+vFnq bG5Q== ARC-Authentication-Results: i=1; mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 185.236.200.248 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 185.236.200.248 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, Sebastian Panceac , Thomas Gleixner , Andy Shevchenko Subject: [PATCH 4.9 16/65] x86/platform/intel-mid: Handle Intel Edison reboot correctly Date: Fri, 9 Mar 2018 16:18:16 -0800 Message-Id: <20180310001826.303126005@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180310001824.927996722@linuxfoundation.org> References: <20180310001824.927996722@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review 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?1594507942697323637?= X-GMAIL-MSGID: =?utf-8?q?1594507942697323637?= 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: Sebastian Panceac commit 028091f82eefd5e84f81cef81a7673016ecbe78b upstream. When the Intel Edison module is powered with 3.3V, the reboot command makes the module stuck. If the module is powered at a greater voltage, like 4.4V (as the Edison Mini Breakout board does), reboot works OK. The official Intel Edison BSP sends the IPCMSG_COLD_RESET message to the SCU by default. The IPCMSG_COLD_BOOT which is used by the upstream kernel is only sent when explicitely selected on the kernel command line. Use IPCMSG_COLD_RESET unconditionally which makes reboot work independent of the power supply voltage. [ tglx: Massaged changelog ] Fixes: bda7b072de99 ("x86/platform/intel-mid: Implement power off sequence") Signed-off-by: Sebastian Panceac Signed-off-by: Thomas Gleixner Acked-by: Andy Shevchenko Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/1519810849-15131-1-git-send-email-sebastian@resin.io Signed-off-by: Greg Kroah-Hartman --- arch/x86/platform/intel-mid/intel-mid.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/x86/platform/intel-mid/intel-mid.c +++ b/arch/x86/platform/intel-mid/intel-mid.c @@ -79,7 +79,7 @@ static void intel_mid_power_off(void) static void intel_mid_reboot(void) { - intel_scu_ipc_simple_command(IPCMSG_COLD_BOOT, 0); + intel_scu_ipc_simple_command(IPCMSG_COLD_RESET, 0); } static unsigned long __init intel_mid_calibrate_tsc(void)