Thanks Seth.
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https://bugs.launchpad.net/bugs/1715833
Title:
[Bug] USB controller failed to respond on Denverton after loading
intel_th_pci module
Status in intel:
In Progress
Status in linux package in Ubuntu:
Fix Committed
Bug description:
Description:
Ubuntu 17.10 beta 1 login UI hangs up on Denverton. Kernel (v4.12)
boots up with lots of mmc/sdhci error log, we cannot input user name
on Ubuntu login UI via USB keyboard. And we did some bisect work to
address this regression. Finally, we found the following commit
"intel_th: pci: Add Denverton SOC support" which causes this
regression. After reverting this patch based on the upstream kernel
4.13, it can boot up without any mmc/sdhci error log and we can input
the user name via USB keyboard to login successfully.
From 5118ccd34780f4637a9360be580f41f4c1feab48 Mon Sep 17 00:00:00 2001
From: Alexander Shishkin <alexander.shish...@linux.intel.com>
Date: Tue, 8 Sep 2015 14:03:55 +0300
Subject: [PATCH] intel_th: pci: Add Denverton SOC support
This adds Intel(R) Trace Hub PCI ID for Denverton SOC.
Signed-off-by: Alexander Shishkin <alexander.shish...@linux.intel.com>
---
drivers/hwtracing/intel_th/pci.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/hwtracing/intel_th/pci.c
b/drivers/hwtracing/intel_th/pci.c
index 0bba384..04bd57b 100644
--- a/drivers/hwtracing/intel_th/pci.c
+++ b/drivers/hwtracing/intel_th/pci.c
@@ -85,6 +85,11 @@ static const struct pci_device_id intel_th_pci_id_table[]
= {
PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa2a6),
.driver_data = (kernel_ulong_t)0,
},
+ {
+ /* Denverton */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x19e1),
+ .driver_data = (kernel_ulong_t)0,
+ },
{ 0 },
};
BIOS version: HVLRCRB.86B.B.64.2017.29.3.01.0406.ACV15D47
And after reverting this patch and entering the os, running "lspci -vv" can
list out this pci device ID. Although, I cannot find the ITH enable options in
BIOS like GLK.
00:1f.7 Non-Essential Instrumentation [1300]: Intel Corporation Device 19e1
(rev 11)
Subsystem: Intel Corporation Device 7270
Control: I/O- Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 255
Region 0: Memory at 480100000 (64-bit, non-prefetchable) [disabled]
[size=1M]
Region 2: Memory at 480800000 (64-bit, non-prefetchable) [disabled]
[size=8M]
Region 4: Memory at 480050800 (64-bit, non-prefetchable) [disabled]
[size=2K]
Capabilities: <access denied>
Target Kernel: 4.14
Target Platform: 17.10
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