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[SCSI] bnx2i: Adjust sq_size module parametr to power of 2 only if a non-zero value is specified

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This issue was discovered during 10G iscsi testing

Default value of 'sq_size' module parameter is '0' which means driver
should use predefined SQ queue size when setting up iscsi connection.

roundup_pow_of_two(0) results in '1' and forces driver to setup
connections with send queue size of '1' and results in lower
performance as well

Signed-off-by: Anil Veerabhadrappa <anilgv@broadcom.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Anil Veerabhadrappa 2009-12-07 11:39:54 -08:00 committed by James Bottomley
parent 5d9e1fa99c
commit f8c9abe797
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/bnx2i/bnx2i_init.c
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@ -367,7 +367,7 @@ static int __init bnx2i_mod_init(void)
printk(KERN_INFO "%s", version);
if (!is_power_of_2(sq_size))
if (sq_size && !is_power_of_2(sq_size))
sq_size = roundup_pow_of_two(sq_size);
mutex_init(&bnx2i_dev_lock);