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authorStephen M. Cameron <scameron@beardog.cce.hp.com>2011-01-06 14:48:29 -0600
committerJames Bottomley <James.Bottomley@suse.de>2011-01-24 11:30:43 -0600
commit02ec19c82e87e3748d326ca5e15e7ddb18c73476 (patch)
treebec075bdfbe16a1ca5cc4df9ada03ef9a14a01b5 /drivers/scsi/hpsa.c
parent6eaf46fdc719991a3ccda1e14b274e9adb515978 (diff)
downloadblackbird-op-linux-02ec19c82e87e3748d326ca5e15e7ddb18c73476.tar.gz
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[SCSI] hpsa: allow driver to put controller in either simple or performant mode
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/hpsa.c')
-rw-r--r--drivers/scsi/hpsa.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 4fb62c2aac05..10076f1868e0 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -74,6 +74,10 @@ static int hpsa_allow_any;
module_param(hpsa_allow_any, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(hpsa_allow_any,
"Allow hpsa driver to access unknown HP Smart Array hardware");
+static int hpsa_simple_mode;
+module_param(hpsa_simple_mode, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(hpsa_simple_mode,
+ "Use 'simple mode' rather than 'performant mode'");
/* define the PCI info for the cards we can control */
static const struct pci_device_id hpsa_pci_device_id[] = {
@@ -4038,6 +4042,9 @@ static __devinit void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h)
{
u32 trans_support;
+ if (hpsa_simple_mode)
+ return;
+
trans_support = readl(&(h->cfgtable->TransportSupport));
if (!(trans_support & PERFORMANT_MODE))
return;
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