]> git.ipfire.org Git - thirdparty/kernel/linux.git/commit
nvme: respect NVME_QUIRK_DISABLE_WRITE_ZEROES when wzsl is set
authorRobert Beckett <bob.beckett@collabora.com>
Fri, 20 Mar 2026 19:22:08 +0000 (19:22 +0000)
committerKeith Busch <kbusch@kernel.org>
Fri, 27 Mar 2026 14:35:05 +0000 (07:35 -0700)
commit40f0496b617b431f8d2dd94d7f785c1121f8a68a
treee56af78638ed143c53e592382847c32ad2a25a01
parentc4cfe8c328aee9e3519a04810480ce8e1fcaeeb7
nvme: respect NVME_QUIRK_DISABLE_WRITE_ZEROES when wzsl is set

The NVM Command Set Identify Controller data may report a non-zero
Write Zeroes Size Limit (wzsl). When present, nvme_init_non_mdts_limits()
unconditionally overrides max_zeroes_sectors from wzsl, even if
NVME_QUIRK_DISABLE_WRITE_ZEROES previously set it to zero.

This effectively re-enables write zeroes for devices that need it
disabled, defeating the quirk. Several Kingston OM* drives rely on
this quirk to avoid firmware issues with write zeroes commands.

Check for the quirk before applying the wzsl override.

Fixes: 5befc7c26e5a ("nvme: implement non-mdts command limits")
Cc: stable@vger.kernel.org
Signed-off-by: Robert Beckett <bob.beckett@collabora.com>
Assisted-by: claude-opus-4-6-v1
Signed-off-by: Keith Busch <kbusch@kernel.org>
drivers/nvme/host/core.c