From 72ceeaecb748dff3d35b10d7518bed651b895f3e Mon Sep 17 00:00:00 2001
From: "Stephen M. Cameron" <scameron@beardog.cce.hp.com>
Date: Thu, 6 Jan 2011 14:48:13 -0600
Subject: [PATCH] [SCSI] hpsa: limit commands allocated on reset_devices
This is to conserve memory in a memory-limited kdump scenario
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
---
drivers/scsi/hpsa.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 82b94e2c745b..688b24333a6f 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -3470,6 +3470,11 @@ static int __devinit hpsa_find_cfgtables(struct ctlr_info *h)
static void __devinit hpsa_get_max_perf_mode_cmds(struct ctlr_info *h)
{
h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands));
+
+ /* Limit commands in memory limited kdump scenario. */
+ if (reset_devices && h->max_commands > 32)
+ h->max_commands = 32;
+
if (h->max_commands < 16) {
dev_warn(&h->pdev->dev, "Controller reports "
"max supported commands of %d, an obvious lie. "
--
2.34.1