diff --git a/arch/ia64/configs/gensparse_defconfig b/arch/ia64/configs/gensparse_defconfig
index 184678fe7832aba13d44ca5d89348b67841c49f4..744fd2f79f6166c4e95ecaaacab875807ab1ffc5 100644
--- a/arch/ia64/configs/gensparse_defconfig
+++ b/arch/ia64/configs/gensparse_defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
 # Linux kernel version: 2.6.16-rc5
-# Mon Feb 27 16:15:43 2006
+# Thu Mar  2 16:39:10 2006
 #
 
 #
@@ -312,7 +312,13 @@ CONFIG_FW_LOADER=m
 #
 # Plug and Play support
 #
-# CONFIG_PNP is not set
+CONFIG_PNP=y
+# CONFIG_PNP_DEBUG is not set
+
+#
+# Protocols
+#
+CONFIG_PNPACPI=y
 
 #
 # Block devices
@@ -357,6 +363,7 @@ CONFIG_BLK_DEV_IDESCSI=m
 # IDE chipset support/bugfixes
 #
 CONFIG_IDE_GENERIC=y
+# CONFIG_BLK_DEV_IDEPNP is not set
 CONFIG_BLK_DEV_IDEPCI=y
 # CONFIG_IDEPCI_SHARE_IRQ is not set
 # CONFIG_BLK_DEV_OFFBOARD is not set
@@ -525,6 +532,7 @@ CONFIG_DUMMY=m
 # CONFIG_BONDING is not set
 # CONFIG_EQUALIZER is not set
 # CONFIG_TUN is not set
+# CONFIG_NET_SB1000 is not set
 
 #
 # ARCnet devices
diff --git a/arch/ia64/kernel/cyclone.c b/arch/ia64/kernel/cyclone.c
index 6ade3790ce07967ae09a3d65a1810c399ea5495c..e00b21514f7c665e97e1374d41c323ef915c1d57 100644
--- a/arch/ia64/kernel/cyclone.c
+++ b/arch/ia64/kernel/cyclone.c
@@ -36,7 +36,7 @@ int __init init_cyclone_clock(void)
 	u32* volatile cyclone_timer;	/* Cyclone MPMC0 register */
 
 	if (!use_cyclone)
-		return -ENODEV;
+		return 0;
 
 	printk(KERN_INFO "Summit chipset: Starting Cyclone Counter.\n");
 
diff --git a/arch/ia64/kernel/mca_drv.c b/arch/ia64/kernel/mca_drv.c
index 8fd93afa75a7bea9a2b687d70537ce21c8094164..e883d85906db5aa583db42f3dcbb9146e40af1a6 100644
--- a/arch/ia64/kernel/mca_drv.c
+++ b/arch/ia64/kernel/mca_drv.c
@@ -123,8 +123,9 @@ mca_page_isolate(unsigned long paddr)
 void
 mca_handler_bh(unsigned long paddr)
 {
-	printk(KERN_DEBUG "OS_MCA: process [pid: %d](%s) encounters MCA.\n",
-		current->pid, current->comm);
+	printk(KERN_ERR
+		"OS_MCA: process [pid: %d](%s) encounters MCA (paddr=%lx)\n",
+		current->pid, current->comm, paddr);
 
 	spin_lock(&mca_bh_lock);
 	switch (mca_page_isolate(paddr)) {
@@ -132,7 +133,7 @@ mca_handler_bh(unsigned long paddr)
 		printk(KERN_DEBUG "Page isolation: ( %lx ) success.\n", paddr);
 		break;
 	case ISOLATE_NG:
-		printk(KERN_DEBUG "Page isolation: ( %lx ) failure.\n", paddr);
+		printk(KERN_CRIT "Page isolation: ( %lx ) failure.\n", paddr);
 		break;
 	default:
 		break;
@@ -567,10 +568,15 @@ recover_from_processor_error(int platform, slidx_table_t *slidx,
 		return 0;
 
 	/*
-	 * If there is no bus error, record is weird but we need not to recover.
+	 * The cache check and bus check bits have four possible states
+	 *   cc bc
+	 *    0  0	Weird record, not recovered
+	 *    1  0	Cache error, not recovered
+	 *    0  1	I/O error, attempt recovery
+	 *    1  1	Memory error, attempt recovery
 	 */
 	if (psp->bc == 0 || pbci == NULL)
-		return 1;
+		return 0;
 
 	/*
 	 * Sorry, we cannot handle so many.
diff --git a/arch/ia64/sn/kernel/sn2/sn2_smp.c b/arch/ia64/sn/kernel/sn2/sn2_smp.c
index 24eefb2fc55ffd56360209316e6c9b6a1f421e2a..b2e1e746b47fca6ebbda649e50077ce56127c2f2 100644
--- a/arch/ia64/sn/kernel/sn2/sn2_smp.c
+++ b/arch/ia64/sn/kernel/sn2/sn2_smp.c
@@ -446,7 +446,7 @@ static struct proc_dir_entry *proc_sn2_ptc;
 static int __init sn2_ptc_init(void)
 {
 	if (!ia64_platform_is("sn2"))
-		return -ENOSYS;
+		return 0;
 
 	if (!(proc_sn2_ptc = create_proc_entry(PTC_BASENAME, 0444, NULL))) {
 		printk(KERN_ERR "unable to create %s proc entry", PTC_BASENAME);
diff --git a/arch/ia64/sn/kernel/tiocx.c b/arch/ia64/sn/kernel/tiocx.c
index 8a56f8b5ffa2243d633f06dae80f7d0e53056e55..99cb28e74295476bc7e074034491f84fcbb77067 100644
--- a/arch/ia64/sn/kernel/tiocx.c
+++ b/arch/ia64/sn/kernel/tiocx.c
@@ -484,7 +484,7 @@ static int __init tiocx_init(void)
 	int found_tiocx_device = 0;
 
 	if (!ia64_platform_is("sn2"))
-		return -ENODEV;
+		return 0;
 
 	bus_register(&tiocx_bus_type);
 
diff --git a/drivers/char/mmtimer.c b/drivers/char/mmtimer.c
index c92378121b4ca054fdce184963b14290a7c6bb55..1b05fa688996dc8e94e5e26c0436d5e5ea92ca52 100644
--- a/drivers/char/mmtimer.c
+++ b/drivers/char/mmtimer.c
@@ -675,7 +675,7 @@ static int __init mmtimer_init(void)
 	cnodeid_t node, maxn = -1;
 
 	if (!ia64_platform_is("sn2"))
-		return -1;
+		return 0;
 
 	/*
 	 * Sanity check the cycles/sec variable
diff --git a/drivers/serial/sn_console.c b/drivers/serial/sn_console.c
index 43e67d6c29d448a14923ec8c4df45973ac252030..60ea4a3f071396637de3fc4459a10aebc7c9d268 100644
--- a/drivers/serial/sn_console.c
+++ b/drivers/serial/sn_console.c
@@ -820,7 +820,7 @@ static int __init sn_sal_module_init(void)
 	int retval;
 
 	if (!ia64_platform_is("sn2"))
-		return -ENODEV;
+		return 0;
 
 	printk(KERN_INFO "sn_console: Console driver init\n");