From: Joe Jin <joe.jin@oracle.com>
Date: Tue, 17 Jul 2012 06:06:07 +0000 (+0800)
Subject: Revert "cciss: remove controllers supported by hpsa"
X-Git-Tag: v2.6.39-400.9.0~429
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=06a315b;p=users%2Fjedix%2Flinux-maple.git

Revert "cciss: remove controllers supported by hpsa"

Orabug: 14106006

This reverts commit 4205df34003eec4371020872cdfa228ffae5bd6a.

Conflicts:
	drivers/block/cciss.c

Signed-off-by: Joe Jin <joe.jin@oracle.com>
---

diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 470ceb26dc56..9109034aacc7 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -76,6 +76,11 @@ MODULE_PARM_DESC(cciss_simple_mode,
 
 static DEFINE_MUTEX(cciss_mutex);
 static struct proc_dir_entry *proc_cciss;
+static int cciss_allow_hpsa;
+module_param(cciss_allow_hpsa, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(cciss_allow_hpsa,
+	"Prevent cciss driver from accessing hardware known to be "
+	" supported by the hpsa driver");
 
 #include "cciss_cmd.h"
 #include "cciss.h"
@@ -139,8 +144,6 @@ static struct board_type products[] = {
 	{0x409D0E11, "Smart Array 6400 EM", &SA5_access},
 	{0x40910E11, "Smart Array 6i", &SA5_access},
 	{0x3225103C, "Smart Array P600", &SA5_access},
-	{0x3223103C, "Smart Array P800", &SA5_access},
-	{0x3234103C, "Smart Array P400", &SA5_access},
 	{0x3235103C, "Smart Array P400i", &SA5_access},
 	{0x3211103C, "Smart Array E200i", &SA5_access},
 	{0x3212103C, "Smart Array E200", &SA5_access},
@@ -148,6 +151,8 @@ static struct board_type products[] = {
 	{0x3214103C, "Smart Array E200i", &SA5_access},
 	{0x3215103C, "Smart Array E200i", &SA5_access},
 	{0x3237103C, "Smart Array E500", &SA5_access},
+/* controllers below this line are also supported by the hpsa driver. */
+#define HPSA_BOUNDARY 0x3223103C
 	{0x3223103C, "Smart Array P800", &SA5_access},
 	{0x3234103C, "Smart Array P400", &SA5_access},
 	{0x323D103C, "Smart Array P700m", &SA5_access},
@@ -4165,9 +4170,13 @@ static int __devinit cciss_lookup_board_id(struct pci_dev *pdev, u32 *board_id)
 	*board_id = ((subsystem_device_id << 16) & 0xffff0000) |
 			subsystem_vendor_id;
 
-	for (i = 0; i < ARRAY_SIZE(products); i++)
+	for (i = 0; i < ARRAY_SIZE(products); i++) {
+		/* Stand aside for hpsa driver on request */
+		if (cciss_allow_hpsa && products[i].board_id == HPSA_BOUNDARY)
+			return -ENODEV;
 		if (*board_id == products[i].board_id)
 			return i;
+	}
 	dev_warn(&pdev->dev, "unrecognized board ID: 0x%08x, ignoring.\n",
 		*board_id);
 	return -ENODEV;