diff options
| author | Hannes Reinecke <hare@suse.de> | 2016-01-03 16:05:30 +1100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-01-06 21:42:57 -0500 |
| commit | 2f10e47ccf26301c7ca1127e2f6c3dfce45ff634 (patch) | |
| tree | 119c59952051c8dcb0f9d00053736e878d2418e6 /drivers/scsi/NCR5380.c | |
| parent | 1bb40589ea377894478653beb4c92b1b1b8a0659 (diff) | |
ncr5380: Remove references to linked commands
Some old drivers partially implemented support for linked commands using
a "proposed" next_link pointer in struct scsi_cmnd that never actually
existed. Remove this code.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ondrej Zary <linux@rainbow-software.org>
Tested-by: Michael Schmitz <schmitzmic@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/NCR5380.c')
| -rw-r--r-- | drivers/scsi/NCR5380.c | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c index cd2065e4f70a..9b7c67f17f4b 100644 --- a/drivers/scsi/NCR5380.c +++ b/drivers/scsi/NCR5380.c @@ -78,9 +78,6 @@ * * 4. Test SCSI-II tagged queueing (I have no devices which support * tagged queueing) - * - * 5. Test linked command handling code after Eric is ready with - * the high level code. */ #include <scsi/scsi_dbg.h> #include <scsi/scsi_transport_spi.h> @@ -94,7 +91,6 @@ #endif #ifndef notyet -#undef LINKED #undef REAL_DMA #endif @@ -191,8 +187,6 @@ * DONT_USE_INTR - if defined, never use interrupts, even if we probe or * override-configure an IRQ. * - * LINKED - if defined, linked commands are supported. - * * PSEUDO_DMA - if defined, PSEUDO DMA is used during the data transfer phases. * * REAL_DMA - if defined, REAL DMA is used during the data transfer phases. @@ -1923,42 +1917,6 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance) { cmd->SCp.Message = tmp; switch (tmp) { - /* - * Linking lets us reduce the time required to get the - * next command out to the device, hopefully this will - * mean we don't waste another revolution due to the delays - * required by ARBITRATION and another SELECTION. - * - * In the current implementation proposal, low level drivers - * merely have to start the next command, pointed to by - * next_link, done() is called as with unlinked commands. - */ -#ifdef LINKED - case LINKED_CMD_COMPLETE: - case LINKED_FLG_CMD_COMPLETE: - /* Accept message by clearing ACK */ - NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE); - dprintk(NDEBUG_LINKED, "scsi%d : target %d lun %llu linked command complete.\n", instance->host_no, cmd->device->id, cmd->device->lun); - /* - * Sanity check : A linked command should only terminate with - * one of these messages if there are more linked commands - * available. - */ - if (!cmd->next_link) { - printk("scsi%d : target %d lun %llu linked command complete, no next_link\n" instance->host_no, cmd->device->id, cmd->device->lun); - sink = 1; - do_abort(instance); - return; - } - initialize_SCp(cmd->next_link); - /* The next command is still part of this process */ - cmd->next_link->tag = cmd->tag; - cmd->result = cmd->SCp.Status | (cmd->SCp.Message << 8); - dprintk(NDEBUG_LINKED, "scsi%d : target %d lun %llu linked request done, calling scsi_done().\n", instance->host_no, cmd->device->id, cmd->device->lun); - cmd->scsi_done(cmd); - cmd = hostdata->connected; - break; -#endif /* def LINKED */ case ABORT: case COMMAND_COMPLETE: /* Accept message by clearing ACK */ |