diff options
| author | Tejun Heo <tj@kernel.org> | 2016-01-15 21:13:05 +0100 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2016-01-25 21:45:55 +0100 |
| commit | 566d1827df2ef0cbe921d3d6946ac3007b1a6938 (patch) | |
| tree | 86327a975ac2d4b675cff10be69128fc977edac6 /kernel/membarrier.c | |
| parent | libata: blacklist a Viking flash model for MWDMA corruption (diff) | |
| download | linux-566d1827df2ef0cbe921d3d6946ac3007b1a6938.tar.xz linux-566d1827df2ef0cbe921d3d6946ac3007b1a6938.zip | |
libata: disable forced PORTS_IMPL for >= AHCI 1.3
Some early controllers incorrectly reported zero ports in PORTS_IMPL
register and the ahci driver fabricates PORTS_IMPL from the number of
ports in those cases. This hasn't mattered but with the new nvme
controllers there are cases where zero PORTS_IMPL is valid and should
be honored.
Disable the workaround for >= AHCI 1.3.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Andy Lutomirski <luto@amacapital.net>
Link: http://lkml.kernel.org/g/CALCETrU7yMvXEDhjAUShoHEhDwifJGapdw--BKxsP0jmjKGmRw@mail.gmail.com
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'kernel/membarrier.c')
0 files changed, 0 insertions, 0 deletions