Revision - 6cc834b - nvme: avoid bogus CRTO values - origin: https://github.com/torvalds/linux

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13 July 2024, 08:20:57 UTC

Revision 6cc834ba62998c65c42d0c63499bdd35067151ec authored by Keith Busch on 12 September 2023, 21:38:58 UTC, committed by Keith Busch on 14 September 2023, 20:09:52 UTC

nvme: avoid bogus CRTO values

Some devices are reporting controller ready mode support, but return 0
for CRTO. These devices require a much higher time to ready than that,
so they are failing to initialize after the driver starter preferring
that value over CAP.TO.

The spec requires that CAP.TO match the appropritate CRTO value, or be
set to 0xff if CRTO is larger than that. This means that CAP.TO can be
used to validate if CRTO is reliable, and provides an appropriate
fallback for setting the timeout value if not. Use whichever is larger.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=217863
Reported-by: Cláudio Sampaio <patola@gmail.com>
Reported-by: Felix Yan <felixonmars@archlinux.org>
Tested-by: Felix Yan <felixonmars@archlinux.org>
Based-on-a-patch-by: Felix Yan <felixonmars@archlinux.org>
Cc: stable@vger.kernel.org
Signed-off-by: Keith Busch <kbusch@kernel.org>

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Tip revision: 6cc834ba62998c65c42d0c63499bdd35067151ec authored by Keith Busch on 12 September 2023, 21:38:58 UTC
nvme: avoid bogus CRTO values

Tip revision: 6cc834b

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.clang-format	-rw-r--r--	20.1 KB
.cocciconfig	-rw-r--r--	59 bytes
.get_maintainer.ignore	-rw-r--r--	151 bytes
.gitattributes	-rw-r--r--	105 bytes
.gitignore	-rw-r--r--	2.0 KB
.mailmap	-rw-r--r--	28.8 KB
.rustfmt.toml	-rw-r--r--	369 bytes
COPYING	-rw-r--r--	496 bytes
CREDITS	-rw-r--r--	100.3 KB
Kbuild	-rw-r--r--	2.5 KB
Kconfig	-rw-r--r--	555 bytes
MAINTAINERS	-rw-r--r--	699.5 KB
Makefile	-rw-r--r--	69.8 KB
README	-rw-r--r--	727 bytes

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nvme: avoid bogus CRTO values

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