"spi-nor spi0.1:Software reset failed:-524" in shutdown screen

[AceLan Kao]

[Impact]
There is a spi error message on the screen when shutting down the machine.
It won't hurt anything and all device work well in the next boot up.
Intel SPI controller doesn't support reset command, but our customer feel bad about this message.

[Fix]
Distinguish the error code -EOPNOTSUPP from -ENOTSUPP, and not showing the warnning when it's op not supported.
https://lkml.org/lkml/2023/11/29/62

[Test case]
1. boot up the system with intel SPI controller on it
2. power off the system and check if there are spi software reset failed errors on the screen.

[Where problems could occur]
There is a minor risk of breaking user-space applications
that rely on specific return codes for unsupported operations. However,
this risk is considered low, as such use-cases are unlikely to be common
or critical.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-oem-6.5/6.5.0-1010.11 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-oem-6.5' to 'verification-done-jammy-linux-oem-6.5'. If the problem still exists, change the tag 'verification-needed-jammy-linux-oem-6.5' to 'verification-failed-jammy-linux-oem-6.5'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Atlas Yu (pseudoc)]

Lenovo crew also verified this on 2 ThinkStation device.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-oem-6.5 - 6.5.0-1011.12

---------------
linux-oem-6.5 (6.5.0-1011.12) jammy; urgency=medium

  * jammy/linux-oem-6.5: 6.5.0-1011.12 -proposed tracker (LP: #2047946)

  * [needs-packaging] usbio-drivers (LP: #2041800)
    - SAUCE: usbio-drivers: import intel-usbio-dkms source
    - debian/dkms-versions -- build usbio-drivers from the in-tree copy

  * Support standalone dkms source tree embedded in kernel source (LP: #2047909)
    - [Packaging] dkms-build -- support in-tree dkms source directory

  * jammy-oem-6.5: one more panel needs to disable psr2 (LP: #2046681)
    - SAUCE: drm/i915/display/psr: disable psr2 for panel_0x4d_0x10_0x8f_0x15

 -- Timo Aaltonen <email address hidden> Wed, 03 Jan 2024 21:03:45 +0200

[AceLan Kao (acelankao)]

The 2 commits are included in v6.8-rc1, and it won't impact any functionalities, so won't fix for old releases.

7a030abc0185 mtd: spi-nor: Stop reporting warning message when soft reset is not suported
cff49d58f57e spi: Unify error codes by replacing -ENOTSUPP with -EOPNOTSUPP