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firewire: sbp2: remove redundant check for bidi command

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[Bart van Asche:]  SCSI core never sets cmd->sc_data_direction to
DMA_BIDIRECTIONAL; scsi_bidi_cmnd(cmd) should be used instead to
test for a bidirectional command.

[Christoph Hellwig:]  Bidirectional commands won't ever be queued
anyway, unless a LLD or transport driver sets QUEUE_FLAG_BIDI.

So, simply remove the respective queuecommand check in the SBP-2
transport driver.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Stefan Richter 2015-01-23 15:05:13 +01:00
parent b625a82595
commit 1f95f8c9fd
1 changed files with 0 additions and 11 deletions
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11
drivers/firewire/sbp2.c
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@ -1463,17 +1463,6 @@ static int sbp2_scsi_queuecommand(struct Scsi_Host *shost,
struct sbp2_command_orb *orb;
int generation, retval = SCSI_MLQUEUE_HOST_BUSY;
/*
* Bidirectional commands are not yet implemented, and unknown
* transfer direction not handled.
*/
if (cmd->sc_data_direction == DMA_BIDIRECTIONAL) {
dev_err(lu_dev(lu), "cannot handle bidirectional command\n");
cmd->result = DID_ERROR << 16;
cmd->scsi_done(cmd);
return 0;
}
orb = kzalloc(sizeof(*orb), GFP_ATOMIC);
if (orb == NULL)
return SCSI_MLQUEUE_HOST_BUSY;