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Commit 9ac49d3a authored by nagalakshmi.nandigama@lsi.com's avatar nagalakshmi.nandigama@lsi.com Committed by James Bottomley
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[SCSI] mpt2sas: Increase max transfer support from 4MB to 16MB 



Increase max transfer support from 4MB to 16MB.
This is done by changing the shost->max_sector from 8192 to 32767

Signed-off-by: default avatarNagalakshmi Nandigama <nagalakshmi.nandigama@lsi.com>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent ba96bd0b

drivers/scsi/mpt2sas/mpt2sas_scsih.c

+5 −5
Original line number Diff line number Diff line
@@ -99,7 +99,7 @@ MODULE_PARM_DESC(logging_level, " bits for enabling additional logging info " 


static ushort max_sectors = 0xFFFF;

module_param(max_sectors, ushort, 0);

MODULE_PARM_DESC(max_sectors, "max sectors, range 64 to 8192  default=8192");

MODULE_PARM_DESC(max_sectors, "max sectors, range 64 to 32767  default=32767");



/* scsi-mid layer global parmeter is max_report_luns, which is 511 */

#define MPT2SAS_MAX_LUN (16895)
@@ -7453,7 +7453,7 @@ static struct scsi_host_template scsih_driver_template = { 
	.can_queue			= 1,

	.this_id			= -1,

	.sg_tablesize			= MPT2SAS_SG_DEPTH,

	.max_sectors			= 8192,

	.max_sectors			= 32767,

	.cmd_per_lun			= 7,

	.use_clustering			= ENABLE_CLUSTERING,

	.shost_attrs			= mpt2sas_host_attrs,
@@ -7994,11 +7994,11 @@ _scsih_probe(struct pci_dev *pdev, const struct pci_device_id *id) 
			printk(MPT2SAS_WARN_FMT "Invalid value %d passed "

			    "for max_sectors, range is 64 to 8192. Assigning "

			    "value of 64.\n", ioc->name, max_sectors);

		} else if (max_sectors > 8192) {

			shost->max_sectors = 8192;

		} else if (max_sectors > 32767) {

			shost->max_sectors = 32767;

			printk(MPT2SAS_WARN_FMT "Invalid value %d passed "

			    "for max_sectors, range is 64 to 8192. Assigning "

			    "default value of 8192.\n", ioc->name,

			    "default value of 32767.\n", ioc->name,

			    max_sectors);

		} else {

			shost->max_sectors = max_sectors & 0xFFFE;