2 files changed, 33 insertions, 1 deletions

diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 65132f920459..69cbc57c2d1c 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -138,6 +138,29 @@ static int acpi_battery_technology(struct acpi_battery *battery)
 
 static int acpi_battery_get_state(struct acpi_battery *battery);
 
+static int acpi_battery_is_charged(struct acpi_battery *battery)
+{
+        /* either charging or discharging */
+        if (battery->state != 0)
+                return 0;
+
+        /* battery not reporting charge */
+        if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN ||
+            battery->capacity_now == 0)
+                return 0;
+
+        /* good batteries update full_charge as the batteries degrade */
+        if (battery->full_charge_capacity == battery->capacity_now)
+                return 1;
+
+        /* fallback to using design values for broken batteries */
+        if (battery->design_capacity == battery->capacity_now)
+                return 1;
+
+        /* we don't do any sort of metric based on percentages */
+        return 0;
+}
+
 static int acpi_battery_get_property(struct power_supply *psy,
                                      enum power_supply_property psp,
                                      union power_supply_propval *val)
@@ -155,7 +178,7 @@ static int acpi_battery_get_property(struct power_supply *psy,
                         val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
                 else if (battery->state & 0x02)
                         val->intval = POWER_SUPPLY_STATUS_CHARGING;
-                else if (battery->state == 0)
+                else if (acpi_battery_is_charged(battery))
                         val->intval = POWER_SUPPLY_STATUS_FULL;
                 else
                         val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 5c2f5d343be6..2fe15060dcdc 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -120,6 +120,8 @@ static struct acpi_ec {
         spinlock_t curr_lock;
 } *boot_ec, *first_ec;
 
+static int EC_FLAGS_MSI; /* Out-of-spec MSI controller */
+
 /* --------------------------------------------------------------------------
                              Transaction Management
    -------------------------------------------------------------------------- */
@@ -259,6 +261,8 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec,
                 clear_bit(EC_FLAGS_GPE_MODE, &ec->flags);
                 acpi_disable_gpe(NULL, ec->gpe);
         }
+        if (EC_FLAGS_MSI)
+                udelay(ACPI_EC_DELAY);
         /* start transaction */
         spin_lock_irqsave(&ec->curr_lock, tmp);
         /* following two actions should be kept atomic */
@@ -967,6 +971,11 @@ int __init acpi_ec_ecdt_probe(void)
         /*
          * Generate a boot ec context
          */
+        if (dmi_name_in_vendors("Micro-Star") ||
+            dmi_name_in_vendors("Notebook")) {
+                pr_info(PREFIX "Enabling special treatment for EC from MSI.\n");
+                EC_FLAGS_MSI = 1;
+        }
         status = acpi_get_table(ACPI_SIG_ECDT, 1,
                                 (struct acpi_table_header **)&ecdt_ptr);
         if (ACPI_SUCCESS(status)) {