5 files changed, 12 insertions, 3 deletions
diff --git a/drivers/acpi/dispatcher/dsobject.c b/drivers/acpi/dispatcher/dsobject.c
index 1022e38994c2..0f2805899210 100644
--- a/drivers/acpi/dispatcher/dsobject.c
+++ b/drivers/acpi/dispatcher/dsobject.c
@@ -496,7 +496,7 @@ acpi_ds_build_internal_package_obj(struct acpi_walk_state *walk_state,
 			arg = arg->common.next;
 		}
 
-		ACPI_ERROR((AE_INFO,
+		ACPI_WARNING((AE_INFO,
 			    "Package List length (%X) larger than NumElements count (%X), truncated\n",
 			    i, element_count));
 	} else if (i < element_count) {
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index d3f0a62efcc1..ee68ac54c0d4 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -138,7 +138,7 @@ static struct dmi_system_id __cpuinitdata processor_idle_dmi_table[] = {
 	{
 	set_no_mwait, "Extensa 5220", {
 	DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"),
-	DMI_MATCH(DMI_SYS_VENDOR, "ACER"),
+	DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 	DMI_MATCH(DMI_PRODUCT_VERSION, "0100"),
 	DMI_MATCH(DMI_BOARD_NAME, "Columbia") }, NULL},
 	{},
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index 80e32093e977..80c251ec6d2a 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -71,7 +71,7 @@ static DEFINE_MUTEX(performance_mutex);
  *  1 -> ignore _PPC totally -> forced by user through boot param
  */
 static int ignore_ppc = -1;
-module_param(ignore_ppc, uint, 0644);
+module_param(ignore_ppc, int, 0644);
 MODULE_PARM_DESC(ignore_ppc, "If the frequency of your machine gets wrongly" \
 		 "limited by BIOS, this should help");
 
diff --git a/drivers/acpi/sbshc.c b/drivers/acpi/sbshc.c
index bcf2c70fca87..a4e3767b8c64 100644
--- a/drivers/acpi/sbshc.c
+++ b/drivers/acpi/sbshc.c
@@ -107,6 +107,13 @@ static int wait_transaction_complete(struct acpi_smb_hc *hc, int timeout)
 	if (wait_event_timeout(hc->wait, smb_check_done(hc),
 			       msecs_to_jiffies(timeout)))
 		return 0;
+	/*
+	 * After the timeout happens, OS will try to check the status of SMbus.
+	 * If the status is what OS expected, it will be regarded as the bogus
+	 * timeout.
+	 */
+	if (smb_check_done(hc))
+		return 0;
 	else
 		return -ETIME;
 }
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index c3419182c9a7..775c97a282bd 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -300,6 +300,8 @@ int __init acpi_table_init(void)
 
 static int __init acpi_parse_apic_instance(char *str)
 {
+	if (!str)
+		return -EINVAL;
 
 	acpi_apic_instance = simple_strtoul(str, NULL, 0);