From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AG47ELtS8kYWgYGuDGo3gZOYOnuHSRsHvsvBRzDDje8rfmbzg3EUNMiV/OsQXcKyvOpn79BKaR8p ARC-Seal: i=1; a=rsa-sha256; t=1520451731; cv=none; d=google.com; s=arc-20160816; b=MvXJRJj+rM/n1XLrtyKOTeXlPT/Zg/wjpjriX/Wld3W5wBSWkg1k16MCVxZ2DxGlOS KEQPcXjR2U+P7BPqr5fAu64R/aNx+Kle3tfq5Q7i9Yv58Mdlr+/Cz7eCL+Uaj0mKTLSj Pl01oJNN1BZE3uVhV1ib4d6Wis6yAYZWsibp1jcjI+ubhrhGYnCOatO3XTvpovJhgk/6 eUosPNDkskBqx2iHd/uVtS7heRiLGI4ku87E/XQG/DJqszqfMdgwm7+g7OSmsrNqJlfF LWzac4WDc7pmvPMBNcqv9+Sz4+13Pv4l58KK4h1xNDzetMucsy9MbiqeF5XEmH3O0Pwc Zwmw== 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=OkFB7fPPW26ETVNW3/QkEFstsJDzz04Ikeb1wBMhIAU=; b=BDYuji6DMYZQUIkUvLyBrs5eVlgFZ+6Y7MSqsHw3cAGq9/OyBp25TA0YIvJnI9icMD M8KXkJq+0bb/kq15yu2ucjLRSLcbr7xQWGgM6eUqXaCPeDcA62A4lSaJ4QtT/r/JlpNc K1GErq6wkVxSMZZ4wrIK2S5iGnZljBhW/dYiUJopMwefGz7Lcol55CujmbBYxSSvAmJA mMDGXIWBL5pMBuKu13xFlQhU0JUfbDBzvrwJUtaO4zdEvc7Dz7+P7vhilcdES7lC86SJ +KMaEC+mEUEVlgVl2qXngb+ZFemj5V5OjLfHcq+aZC3xLxSMDkkmkERb/k6X43k1K1Gw TGtw== 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 4.15 037/122] x86/platform/intel-mid: Handle Intel Edison reboot correctly Date: Wed, 7 Mar 2018 11:37:29 -0800 Message-Id: <20180307191734.481579047@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180307191729.190879024@linuxfoundation.org> References: <20180307191729.190879024@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?1594309195146913046?= X-GMAIL-MSGID: =?utf-8?q?1594309195146913046?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.15-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)