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| author | Kai-Heng Feng <kai.heng.feng@canonical.com> | 2017-06-26 22:39:54 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2017-06-28 16:14:13 +0200 |
| commit | 76a5af841755a0427229a6a77ca83781d61e5b2a (patch) | |
| tree | d7593e41bbe6f81829faf3ac1e35c97b16c8bc20 /drivers/nvme/host/nvme.h | |
| parent | nvme: use a single NVME_AQ_DEPTH and relax it to 32 (diff) | |
| download | linux-76a5af841755a0427229a6a77ca83781d61e5b2a.tar.xz linux-76a5af841755a0427229a6a77ca83781d61e5b2a.zip | |
nvme: explicitly disable APST on quirked devices
A user reports APST is enabled, even when the NVMe is quirked or with
option "default_ps_max_latency_us=0".
The current logic will not set APST if the device is quirked. But the
NVMe in question will enable APST automatically.
Separate the logic "apst is supported" and "to enable apst", so we can
use the latter one to explicitly disable APST at initialiaztion.
BugLink: https://bugs.launchpad.net/bugs/1699004
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Reviewed-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/nvme/host/nvme.h')
| -rw-r--r-- | drivers/nvme/host/nvme.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index 1363ccbacf0a..b74f954eac66 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -167,6 +167,7 @@ struct nvme_ctrl { /* Power saving configuration */ u64 ps_max_latency_us; + bool apst_enabled; u32 hmpre; u32 hmmin; |