diff --git a/Documentation/laptops/acer-wmi.txt b/Documentation/laptops/acer-wmi.txt
index b06696329cff..23df051dbf69 100644
--- a/Documentation/laptops/acer-wmi.txt
+++ b/Documentation/laptops/acer-wmi.txt
@@ -48,7 +48,7 @@ DSDT.
 
 To send me the DSDT, as root/sudo:
 
-cat /sys/firmware/acpi/DSDT > dsdt
+cat /sys/firmware/acpi/tables/DSDT > dsdt
 
 And send me the resulting 'dsdt' file.
 
@@ -169,7 +169,7 @@ can be added to acer-wmi.
 
 The LED is exposed through the LED subsystem, and can be found in:
 
-/sys/devices/platform/acer-wmi/leds/acer-mail:green/
+/sys/devices/platform/acer-wmi/leds/acer-wmi::mail/
 
 The mail LED is autodetected, so if you don't have one, the LED device won't
 be registered.
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index b26e3019e1cc..57570ac47803 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -609,7 +609,8 @@ acpi_bus_get_ejd(acpi_handle handle, acpi_handle *ejd)
 	status = acpi_evaluate_object(handle, "_EJD", NULL, &buffer);
 	if (ACPI_SUCCESS(status)) {
 		obj = buffer.pointer;
-		status = acpi_get_handle(NULL, obj->string.pointer, ejd);
+		status = acpi_get_handle(ACPI_ROOT_OBJECT, obj->string.pointer,
+					 ejd);
 		kfree(buffer.pointer);
 	}
 	return status;
diff --git a/drivers/acpi/wmi.c b/drivers/acpi/wmi.c
index efacc9f8bfe3..c33b1c6e93b1 100644
--- a/drivers/acpi/wmi.c
+++ b/drivers/acpi/wmi.c
@@ -293,7 +293,7 @@ struct acpi_buffer *out)
 {
 	struct guid_block *block = NULL;
 	struct wmi_block *wblock = NULL;
-	acpi_handle handle;
+	acpi_handle handle, wc_handle;
 	acpi_status status, wc_status = AE_ERROR;
 	struct acpi_object_list input, wc_input;
 	union acpi_object wc_params[1], wq_params[1];
@@ -338,8 +338,10 @@ struct acpi_buffer *out)
 		 * expensive, but have no corresponding WCxx method. So we
 		 * should not fail if this happens.
 		 */
-		wc_status = acpi_evaluate_object(handle, wc_method,
-			&wc_input, NULL);
+		wc_status = acpi_get_handle(handle, wc_method, &wc_handle);
+		if (ACPI_SUCCESS(wc_status))
+			wc_status = acpi_evaluate_object(handle, wc_method,
+				&wc_input, NULL);
 	}
 
 	strcpy(method, "WQ");
@@ -351,7 +353,7 @@ struct acpi_buffer *out)
 	 * If ACPI_WMI_EXPENSIVE, call the relevant WCxx method, even if
 	 * the WQxx method failed - we should disable collection anyway.
 	 */
-	if ((block->flags & ACPI_WMI_EXPENSIVE) && wc_status) {
+	if ((block->flags & ACPI_WMI_EXPENSIVE) && ACPI_SUCCESS(wc_status)) {
 		wc_params[0].integer.value = 0;
 		status = acpi_evaluate_object(handle,
 		wc_method, &wc_input, NULL);
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 982e27b86d10..962817e49fba 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -108,6 +108,7 @@ config ACER_WMI
 	depends on ACPI
 	depends on LEDS_CLASS
 	depends on BACKLIGHT_CLASS_DEVICE
+	depends on SERIO_I8042
 	select ACPI_WMI
 	---help---
 	  This is a driver for newer Acer (and Wistron) laptops. It adds
diff --git a/drivers/misc/acer-wmi.c b/drivers/misc/acer-wmi.c
index cf71e312b5cb..dd13a3749927 100644
--- a/drivers/misc/acer-wmi.c
+++ b/drivers/misc/acer-wmi.c
@@ -217,6 +217,15 @@ static struct dmi_system_id acer_quirks[] = {
 		},
 		.driver_data = &quirk_acer_travelmate_2490,
 	},
+	{
+		.callback = dmi_matched,
+		.ident = "Acer Aspire 3610",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
+		},
+		.driver_data = &quirk_acer_travelmate_2490,
+	},
 	{
 		.callback = dmi_matched,
 		.ident = "Acer Aspire 5100",
@@ -226,6 +235,15 @@ static struct dmi_system_id acer_quirks[] = {
 		},
 		.driver_data = &quirk_acer_travelmate_2490,
 	},
+	{
+		.callback = dmi_matched,
+		.ident = "Acer Aspire 5610",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
+		},
+		.driver_data = &quirk_acer_travelmate_2490,
+	},
 	{
 		.callback = dmi_matched,
 		.ident = "Acer Aspire 5630",
@@ -761,7 +779,7 @@ enum led_brightness value)
 }
 
 static struct led_classdev mail_led = {
-	.name = "acer-mail:green",
+	.name = "acer-wmi::mail",
 	.brightness_set = mail_led_set,
 };
 
@@ -1052,11 +1070,12 @@ static int __init acer_wmi_init(void)
 
 	if (wmi_has_guid(WMID_GUID2) && interface) {
 		if (ACPI_FAILURE(WMID_set_capabilities())) {
-			printk(ACER_ERR "Unable to detect available devices\n");
+			printk(ACER_ERR "Unable to detect available WMID "
+					"devices\n");
 			return -ENODEV;
 		}
 	} else if (!wmi_has_guid(WMID_GUID2) && interface) {
-		printk(ACER_ERR "Unable to detect available devices\n");
+		printk(ACER_ERR "No WMID device detection method found\n");
 		return -ENODEV;
 	}
 
@@ -1064,21 +1083,20 @@ static int __init acer_wmi_init(void)
 		interface = &AMW0_interface;
 
 		if (ACPI_FAILURE(AMW0_set_capabilities())) {
-			printk(ACER_ERR "Unable to detect available devices\n");
+			printk(ACER_ERR "Unable to detect available AMW0 "
+					"devices\n");
 			return -ENODEV;
 		}
 	}
 
-	if (wmi_has_guid(AMW0_GUID1)) {
-		if (ACPI_FAILURE(AMW0_find_mailled()))
-			printk(ACER_ERR "Unable to detect mail LED\n");
-	}
+	if (wmi_has_guid(AMW0_GUID1))
+		AMW0_find_mailled();
 
 	find_quirks();
 
 	if (!interface) {
-		printk(ACER_ERR "No or unsupported WMI interface, unable to ");
-		printk(KERN_CONT "load.\n");
+		printk(ACER_ERR "No or unsupported WMI interface, unable to "
+				"load\n");
 		return -ENODEV;
 	}
 
diff --git a/drivers/misc/sony-laptop.c b/drivers/misc/sony-laptop.c
index 899e3f75f288..02ff3d19b1cc 100644
--- a/drivers/misc/sony-laptop.c
+++ b/drivers/misc/sony-laptop.c
@@ -315,7 +315,7 @@ static void sony_laptop_report_input_event(u8 event)
 		break;
 
 	default:
-		if (event > ARRAY_SIZE(sony_laptop_input_index)) {
+		if (event >= ARRAY_SIZE(sony_laptop_input_index)) {
 			dprintk("sony_laptop_report_input_event, event not known: %d\n", event);
 			break;
 		}