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libata: Fix command retry decision
authorDamien Le Moal <damien.lemoal@wdc.com>
Wed, 9 May 2018 00:28:12 +0000 (09:28 +0900)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 6 Aug 2018 14:24:36 +0000 (16:24 +0200)
commitcdebef38f64805a1802452acadd33e690bd7c503
treeab4e275c55f08a8796dc683e9c565ad2129eff8e
parent09b8746fd4fb430c2dfcd257b8649bf6754df979
libata: Fix command retry decision

[ Upstream commit 804689ad2d9b66d0d3920b48cf05881049d44589 ]

For failed commands with valid sense data (e.g. NCQ commands),
scsi_check_sense() is used in ata_analyze_tf() to determine if the
command can be retried. In such case, rely on this decision and ignore
the command error mask based decision done in ata_worth_retry().

This fixes useless retries of commands such as unaligned writes on zoned
disks (TYPE_ZAC).

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/ata/libata-eh.c