[Bug 2070339] Re: [Lenovo Ubuntu 24.04 Bug] dmesg show "spi-nor: probe of spi0.0 failed with error -95"

** Description changed:

Fresh install Ubuntu 24.04 on Lenovo systems with Birch Stream SFR and
check kernel boot log "dmesg", there is an error of spi-nor show up as
follows:

spi-nor: probe of spi0.0 failed with error -95

while open kernel dynamic debugging of spi-nor, kernel log show as:

[ 7.143574] calling spi_nor_module_init+0x0/0xff0 [spi_nor] @ 1714
[ 7.145046] calling iaa_crypto_init_module+0x0/0xff0 [iaa_crypto] @ 1611
[ 7.146116] [1714] spi-nor spi0.0: Manufacturer and device ID: ef6020000000
[ 7.146133] [1714] spi-nor spi0.0: error -95 reading CR
[ 7.146135] spi-nor: probe of spi0.0 failed with error -95

Since upstream 6.7.0 has more details info output, I applied it and it
was:

[ 15.425497] calling spi_nor_module_init+0x0/0xff0 [spi_nor] @ 2944
[ 15.426707] spi-nor spi0.0: w25q512nwq (65536 Kbytes)
[ 15.426714] [2944] spi-nor spi0.0: mtd .name = 0000:00:1f.5, .size = 0x4000000 (64MiB), .erasesize = 0x00001000 (4KiB) .numeraseregions = 0
[ 15.426735] [2944] spi-nor spi0.0: error -524 reading CR
[ 15.426738] spi-nor: probe of spi0.0 failed with error -524
[ 15.426780] probe of spi0.0 returned 524 after 1247 usecs
[ 15.426797] initcall spi_nor_module_init+0x0/0xff0 [spi_nor] returned 0 after 1282 usecs
+
+
+ SRU Justification:
+ ==============
+ [Impact]
+ During bootup, the error is shown in dmesg:
+ [ 7.146116] [1714] spi-nor spi0.0: Manufacturer and device ID: ef6020000000
+ [ 7.146133] [1714] spi-nor spi0.0: error -95 reading CR
+ [ 7.146135] spi-nor: probe of spi0.0 failed with error -95
+
+ [Fix]
+ Handle the failed case of -EOPNOTSUPP,
+ and correct the condition of error report.
+ upstream commit in 6.10:
+ fe0b8213c0129 mtd: core: Don't fail mtd_otp_nvmem_add() if OTP is unsupported
+ 5043e55536015 mtd: core: Align comment with an action in mtd_otp_nvmem_add()
+
+ [Test]
+ Vendor tested on hardware, there is no error on the testing built
+ kernel.
+
+ [Where problems could occur]
+ It may break spi-nor flash support.
+
+ Both 2 commits are in 6.10 kernel, so SRU for noble-6.8 only.

** Changed in: linux (Ubuntu)
Assignee: Leo Lin (0xff07) => AaronMa (mapengyu)

** Also affects: linux (Ubuntu Noble)
Importance: Undecided
Status: New

** Changed in: linux (Ubuntu Noble)
Status: New => In Progress

** Changed in: linux (Ubuntu)
Status: Confirmed => In Progress

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https://bugs.launchpad.net/bugs/2070339

Title:
[Lenovo Ubuntu 24.04 Bug] dmesg show "spi-nor: probe of spi0.0 failed
with error -95"

Status in linux package in Ubuntu:
In Progress
Status in linux source package in Noble:
In Progress

Bug description:
Fresh install Ubuntu 24.04 on Lenovo systems with Birch Stream SFR and
check kernel boot log "dmesg", there is an error of spi-nor show up as
follows:

spi-nor: probe of spi0.0 failed with error -95

while open kernel dynamic debugging of spi-nor, kernel log show as:

[ 7.143574] calling spi_nor_module_init+0x0/0xff0 [spi_nor] @ 1714
[ 7.145046] calling iaa_crypto_init_module+0x0/0xff0 [iaa_crypto] @ 1611
[ 7.146116] [1714] spi-nor spi0.0: Manufacturer and device ID: ef6020000000
[ 7.146133] [1714] spi-nor spi0.0: error -95 reading CR
[ 7.146135] spi-nor: probe of spi0.0 failed with error -95

Since upstream 6.7.0 has more details info output, I applied it and it
was:

[ 15.425497] calling spi_nor_module_init+0x0/0xff0 [spi_nor] @ 2944
[ 15.426707] spi-nor spi0.0: w25q512nwq (65536 Kbytes)
[ 15.426714] [2944] spi-nor spi0.0: mtd .name = 0000:00:1f.5, .size = 0x4000000 (64MiB), .erasesize = 0x00001000 (4KiB) .numeraseregions = 0
[ 15.426735] [2944] spi-nor spi0.0: error -524 reading CR
[ 15.426738] spi-nor: probe of spi0.0 failed with error -524
[ 15.426780] probe of spi0.0 returned 524 after 1247 usecs
[ 15.426797] initcall spi_nor_module_init+0x0/0xff0 [spi_nor] returned 0 after 1282 usecs


SRU Justification:
==============
[Impact]
During bootup, the error is shown in dmesg:
[ 7.146116] [1714] spi-nor spi0.0: Manufacturer and device ID: ef6020000000
[ 7.146133] [1714] spi-nor spi0.0: error -95 reading CR
[ 7.146135] spi-nor: probe of spi0.0 failed with error -95

[Fix]
Handle the failed case of -EOPNOTSUPP,
and correct the condition of error report.
upstream commit in 6.10:
fe0b8213c0129 mtd: core: Don't fail mtd_otp_nvmem_add() if OTP is unsupported
5043e55536015 mtd: core: Align comment with an action in mtd_otp_nvmem_add()

[Test]
Vendor tested on hardware, there is no error on the testing built
kernel.

[Where problems could occur]
It may break spi-nor flash support.

Both 2 commits are in 6.10 kernel, so SRU for noble-6.8 only.

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