diff options
| author | Akinobu Mita <akinobu.mita@gmail.com> | 2019-11-15 00:40:01 +0900 |
|---|---|---|
| committer | Keith Busch <kbusch@kernel.org> | 2019-11-22 02:21:08 +0900 |
| commit | 6c6aa2f26c6813af38d88718881c0307bb9a54c0 (patch) | |
| tree | 7991aa6e3616c743d5583cd77a04301c1135c4f9 /drivers/nvme/host/hwmon.c | |
| parent | 52deba0f02a98c150677a9c381cc1991a928bcff (diff) | |
nvme: hwmon: add quirk to avoid changing temperature threshold
This adds a new quirk NVME_QUIRK_NO_TEMP_THRESH_CHANGE to avoid changing
the value of the temperature threshold feature for specific devices that
show undesirable behavior.
Guenter reported:
"On my Intel NVME drive (SSDPEKKW512G7), writing any minimum limit on the
Composite temperature sensor results in a temperature warning, and that
warning is sticky until I reset the controller.
It doesn't seem to matter which temperature I write; writing -273000 has
the same result."
The Intel NVMe has the latest firmware version installed, so this isn't
a problem that was ever fixed.
Reported-by: Guenter Roeck <linux@roeck-us.net>
Cc: Keith Busch <kbusch@kernel.org>
Cc: Jens Axboe <axboe@fb.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: Jean Delvare <jdelvare@suse.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Diffstat (limited to 'drivers/nvme/host/hwmon.c')
| -rw-r--r-- | drivers/nvme/host/hwmon.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/nvme/host/hwmon.c b/drivers/nvme/host/hwmon.c index 97a84b4b45db..a5af21f5d370 100644 --- a/drivers/nvme/host/hwmon.c +++ b/drivers/nvme/host/hwmon.c @@ -170,8 +170,12 @@ static umode_t nvme_hwmon_is_visible(const void *_data, case hwmon_temp_max: case hwmon_temp_min: if ((!channel && data->ctrl->wctemp) || - (channel && data->log.temp_sensor[channel - 1])) + (channel && data->log.temp_sensor[channel - 1])) { + if (data->ctrl->quirks & + NVME_QUIRK_NO_TEMP_THRESH_CHANGE) + return 0444; return 0644; + } break; case hwmon_temp_alarm: if (!channel) |