https://github.com/torvalds/linux
Revision e8f11db956aa09c1618051a7aaf367d6810d8d8c authored by Christoph Hellwig on 29 August 2017, 12:42:06 UTC, committed by Tejun Heo on 29 August 2017, 15:33:24 UTC
ATA-8 and later mirrors the TRUSTED COMPUTING SUPPORTED bit in word 48 of
the IDENTIFY DEVICE data.  Check this before issuing a READ LOG PAGE
command to avoid issues with buggy devices.  The only downside is that
we can't support Security Send / Receive for a device with an older
revision due to the conflicting use of this field in earlier
specifications.

tj: The reason we need this is because some devices which don't
    support READ LOG PAGE lock up after getting issued that command.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
1 parent 35f0b6a
Raw File
Tip revision: e8f11db956aa09c1618051a7aaf367d6810d8d8c authored by Christoph Hellwig on 29 August 2017, 12:42:06 UTC
libata: check for trusted computing in IDENTIFY DEVICE data
Tip revision: e8f11db
.gitattributes
*.c   diff=cpp
*.h   diff=cpp
back to top