This is a note to let you know that I've just added the patch titled

x86/platform/intel-mid: Handle Intel Edison reboot correctly

to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: x86-platform-intel-mid-handle-intel-edison-reboot-correctly.patch and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From 028091f82eefd5e84f81cef81a7673016ecbe78b Mon Sep 17 00:00:00 2001

From: Sebastian Panceac sebastian@resin.io Date: Wed, 28 Feb 2018 11:40:49 +0200 Subject: x86/platform/intel-mid: Handle Intel Edison reboot correctly

From: Sebastian Panceac sebastian@resin.io

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 sebastian@resin.io Signed-off-by: Thomas Gleixner tglx@linutronix.de Acked-by: Andy Shevchenko andy.shevchenko@gmail.com Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/1519810849-15131-1-git-send-email-sebastian@resin.... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- 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)

Patches currently in stable-queue which might be from sebastian@resin.io are

queue-4.14/x86-platform-intel-mid-handle-intel-edison-reboot-correctly.patch