-- bionic --
ubuntu@hotdog:~$ uname -a
Linux hotdog 4.15.0-42-generic #45-Ubuntu SMP Thu Nov 15 19:31:49 UTC 2018
aarch64 aarch64 aarch64 GNU/Linux
ubuntu@hotdog:~$
ubuntu@hotdog:~$ for i in {1..500}; do sudo modprobe -r ipmi_ssif; sleep 2s ;
sudo modprobe ipmi_ssif || exit; done
ubuntu@hotdog:~$
--- dmesg ---
Nov 20 17:42:30 hotdog kernel: [ 1326.490808] IPMI SSIF Interface driver
Nov 20 17:42:30 hotdog kernel: [ 1326.522331] ipmi_ssif: Trying
SMBIOS-specified SSIF interface at i2c address 0xe, adapter xlp9xx-i2c, slave
address 0x20
Nov 20 17:42:30 hotdog kernel: [ 1326.638455] ipmi_ssif 0-000e: Found new BMC
(man_id: 0x00b3d1, prod_id: 0x0001, dev_id: 0x20)
Works as expected, no errors in dmesg.
** Tags removed: verification-needed-bionic
** Tags added: verification-done-bionic
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https://bugs.launchpad.net/bugs/1799276
Title:
[Bionic] ipmi: Remove ACPI SPMI probing from the SSIF (I2C) driver
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Bionic:
Fix Committed
Bug description:
[Impact]
The IPMI spec states:
The purpose of the SPMI Table is to provide a mechanism that can be
used by the OSPM (an ACPI term for “OS Operating System-directed
configuration and Power Management” essentially meaning an ACPI-aware
OS or OS loader) very early in the boot process, e.g., before the
ability to execute ACPI control methods in the OS is available.
When we are probing IPMI in Linux, ACPI control methods are available,
so we shouldn't be probing using SPMI. It could cause some confusion
during the probing process.
[Fix]
Fixed upstream in 4.17:
commit 4866b1dce0389013a268f0ab63f7229b30c6e5fe
Author: Corey Minyard <[email protected]>
Date: Thu Mar 8 15:00:28 2018 -0600
ipmi: Remove ACPI SPMI probing from the SSIF (I2C) driver
[Test]
-- Test case --
for i in {1..500}; do sudo modprobe -r ipmi_ssif; sleep 2s ; sudo modprobe
ipmi_ssif || exit; done
--------------
-- Before Applying the patch --
Jun 19 18:53:04 starbuck kernel: [ 126.351580] ipmi_ssif 0-000e: Found new
BMC (man_id: 0x000000, prod_id: 0x0202, dev_id: 0x20)
Jun 19 18:53:06 starbuck kernel: [ 128.725391] ipmi_ssif: probe of
dmi-ipmi-ssif.1 failed with error -17
-- With patch applied --
Oct 19 19:59:49 starbuck kernel: [ 1501.699109] IPMI SSIF Interface driver
Oct 19 19:59:49 starbuck kernel: [ 1501.730439] ipmi_ssif: Trying
SMBIOS-specified SSIF interface at i2c address 0xe, adapter xlp9xx-i2c, slave
address 0x20
Oct 19 19:59:49 starbuck kernel: [ 1501.862509] ipmi_ssif 0-000e: Found new
BMC (man_id: 0x000000, prod_id: 0x0202, dev_id: 0x20)
[Regression Potential]
This patch applies to ipmi_ssif driver and was tested on ARM64 Cavium
ThunderX2 platform and no regressions were found.
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