This is a note to let you know that I've just added the patch titled x86/intel: Disable HPET on Intel Ice Lake platforms to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: x86-intel-disable-hpet-on-intel-ice-lake-platforms.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 640bf16749725ecf8180863d1245d93c592a68cc Author: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> Date: Fri Nov 29 14:23:03 2019 +0800 x86/intel: Disable HPET on Intel Ice Lake platforms [ Upstream commit e0748539e3d594dd26f0d27a270f14720b22a406 ] Like CFL and CFL-H, ICL SoC has skewed HPET timer once it hits PC10. So let's disable HPET on ICL. Signed-off-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: bp@xxxxxxxxx Cc: feng.tang@xxxxxxxxx Cc: harry.pan@xxxxxxxxx Cc: hpa@xxxxxxxxx Link: https://lkml.kernel.org/r/20191129062303.18982-2-kai.heng.feng@xxxxxxxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c index 606711f5ebf8..2f9ec14be3b1 100644 --- a/arch/x86/kernel/early-quirks.c +++ b/arch/x86/kernel/early-quirks.c @@ -714,6 +714,8 @@ static struct chipset early_qrk[] __initdata = { PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, force_disable_hpet}, { PCI_VENDOR_ID_INTEL, 0x3ec4, PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, force_disable_hpet}, + { PCI_VENDOR_ID_INTEL, 0x8a12, + PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, force_disable_hpet}, { PCI_VENDOR_ID_BROADCOM, 0x4331, PCI_CLASS_NETWORK_OTHER, PCI_ANY_ID, 0, apple_airport_reset}, {}