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authorTejun Heo <tj@kernel.org>2019-06-24 09:32:50 -0700
committerJens Axboe <axboe@kernel.dk>2019-06-25 09:22:45 -0600
commitca156e006add67e4beea7896be395160735e09b0 (patch)
tree5f9eda53f039bad990403087f1daa15f529e94f0 /mm
parent9e0babf2c06c73cda2c0cd37a1653d823adb40ec (diff)
libata: don't request sense data on !ZAC ATA devices
ZAC support added sense data requesting on error for both ZAC and ATA devices. This seems to cause erratic error handling behaviors on some SSDs where the device reports sense data availability and then delivers the wrong content making EH take the wrong actions. The failure mode was sporadic on a LITE-ON ssd and couldn't be reliably reproduced. There is no value in requesting sense data from non-ZAC ATA devices while there's a significant risk of introducing EH misbehaviors which are difficult to reproduce and fix. Let's do the sense data dancing only for ZAC devices. Reviewed-by: Hannes Reinecke <hare@suse.com> Tested-by: Masato Suzuki <masato.suzuki@wdc.com> Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'mm')
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