[PATCH 0/1][SRU][F][G][OEM-5.6] blk_update_request error when mount nvme partition

[AceLan Kao]

BugLink: https://bugs.launchpad.net/bugs/1872383

[Impact]
Got below error message after upgraded to Focal kernel(v5.4)
   [ 576.793852] blk_update_request: operation not supported error, dev
   nvme1n1, sector 4218887 op 0x9:(WRITE_ZEROES) flags 0x0 phys_seg 0 prio
   class 0

This issue was introduced by below commit from v5.1-rc1 which added write
zeros command
   6e02318eaea5 nvme: add support for the Write Zeroes command
SK hynix firmware has a bug that it treats NLB as max value instead
of a range, so the NLB passed isn't a valid value to the firmware.

[Fix]
Add a quirk to disable write zeros support

[Test]
Verified on the machine with SK hynix PC400 nvme machine.

[Regression Potential]
Low, it's a quirk to a specific PCI ID.

Kai-Heng Feng (1):
  nvme-pci: prevent SK hynix PC400 from using Write Zeroes command

 drivers/nvme/host/pci.c | 2 ++
 1 file changed, 2 insertions(+)

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2.25.1