On Fri, Aug 27, 2021 at 01:33:44AM -0400, Kate Hsuan wrote:

A flag ATA_HORKAGE_NONCQ_ON_ASMEDIA_AMD_MARVELL is added to disable NCQ
on AMD/MAREL/ASMEDIA chipsets.

Samsung 860/870 SSD are disabled to use NCQ trim functions but it will
lead to performace drop. From the bugzilla, we could realize the issues
only appears on those chipset mentioned above. So this flag could be
used to only disable NCQ on specific chipsets.

Fixes: ca6bfcb2f6d9 ("libata: Enable queued TRIM for Samsung SSD 860")
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=203475
Signed-off-by: Hans de Goede <redacted>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Kate Hsuan <hpa@redhat.com>
---
 drivers/ata/libata-core.c | 37 ++++++++++++++++++++++++++++++++-----
 include/linux/libata.h    |  3 +++
 2 files changed, 35 insertions(+), 5 deletions(-)

<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read:
    https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.

</formletter>