On 12/01/2011 03:22 AM, nagalakshmi.nandigama@xxxxxxx wrote:
> Increase max transfer support from 4MB to 16MB.
> This is done by changing the shost->max_sector from 8192 to 32767
>
> Signed-off-by: Nagalakshmi Nandigama <nagalakshmi.nandigama@xxxxxxx>
> ---
>
> diff --git a/drivers/scsi/mpt2sas/mpt2sas_scsih.c b/drivers/scsi/mpt2sas/mpt2sas_scsih.c
> index 8df4095..97f0997 100644
> --- a/drivers/scsi/mpt2sas/mpt2sas_scsih.c
> +++ b/drivers/scsi/mpt2sas/mpt2sas_scsih.c
> @@ -100,7 +100,7 @@ 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)
> @@ -7449,7 +7449,7 @@ 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,
> @@ -7990,11 +7990,11 @@ _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 "
I think you wanted to change the text above "is 64 to 8192" to "is 64 to 32767" too.
That is clearly not so important and can wait for the next patch.
> - "default value of 8192.\n", ioc->name,
> + "default value of 32767.\n", ioc->name,
> max_sectors);
> } else {
> shost->max_sectors = max_sectors & 0xFFFE;
> --
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