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target: Prevent TRANSPORT_FREE_CMD_INTR processing in core_tmr_drain_cmd_list

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commit b0e062aec5 upstream.

This patch contains a bugfix for TMR LUN_RESET related to TRANSPORT_FREE_CMD_INTR
operation, where core_tmr_drain_cmd_list() will now skip processing for this
case to prevent an ABORT_TASK status from being returned for descriptors that
are already queued up to be released by processing thread context.

Cc: Roland Dreier <roland@purestorage.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@risingtidesystems.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Nicholas Bellinger
2011-10-11 06:02:48 +00:00
committed by Greg Kroah-Hartman
parent 6f47552250
commit be9f40a767
1 changed files with 10 additions and 0 deletions
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10
drivers/target/target_core_tmr.c
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@@ -337,6 +337,16 @@ int core_tmr_lun_reset(
*/
if (prout_cmd == cmd)
continue;
/*
* Skip direct processing of TRANSPORT_FREE_CMD_INTR for
* HW target mode fabrics.
*/
spin_lock(&cmd->t_state_lock);
if (cmd->t_state == TRANSPORT_FREE_CMD_INTR) {
spin_unlock(&cmd->t_state_lock);
continue;
}
spin_unlock(&cmd->t_state_lock);
atomic_dec(&cmd->t_transport_queue_active);
atomic_dec(&qobj->queue_cnt);