Commit 2ac6d297 authored by Finn Thain's avatar Finn Thain Committed by Martin K. Petersen
Browse files

scsi: mac_scsi: Enable scatter/gather by default 



Now that FLAG_DMA_FIXUP has itself been fixed up, it can be used to enable
scatter/gather. Increase the default value for sg_tablesize to SG_ALL for
those systems which are compatible with FLAG_DMA_FIXUP.

Tested-by: default avatarStan Johnson <userm57@yahoo.com>
Signed-off-by: default avatarFinn Thain <fthain@linux-m68k.org>
Link: https://lore.kernel.org/r/f155ba5ce93055cbc6ac6d4026673f40f826edb8.1723001788.git.fthain@linux-m68k.org


Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 5768718d

drivers/scsi/mac_scsi.c

+7 −1
Original line number Diff line number Diff line
@@ -432,7 +432,7 @@ static struct scsi_host_template mac_scsi_template = { 
	.eh_host_reset_handler	= macscsi_host_reset,

	.can_queue		= 16,

	.this_id		= 7,

	.sg_tablesize		= 1,

	.sg_tablesize		= SG_ALL,

	.cmd_per_lun		= 2,

	.dma_boundary		= PAGE_SIZE - 1,

	.cmd_size		= sizeof(struct NCR5380_cmd),
@@ -470,6 +470,9 @@ static int __init mac_scsi_probe(struct platform_device *pdev) 
	if (setup_hostid >= 0)

		mac_scsi_template.this_id = setup_hostid & 7;



	if (macintosh_config->ident == MAC_MODEL_IIFX)

		mac_scsi_template.sg_tablesize = 1;



	instance = scsi_host_alloc(&mac_scsi_template,

	                           sizeof(struct NCR5380_hostdata));

	if (!instance)
@@ -491,6 +494,9 @@ static int __init mac_scsi_probe(struct platform_device *pdev) 


	host_flags |= setup_toshiba_delay > 0 ? FLAG_TOSHIBA_DELAY : 0;



	if (instance->sg_tablesize > 1)

		host_flags |= FLAG_DMA_FIXUP;



	error = NCR5380_init(instance, host_flags | FLAG_LATE_DMA_SETUP);

	if (error)

		goto fail_init;