ACPI: sbs: fix present rate

http://bugzilla.kernel.org/show_bug.cgi?id=7897

Signed-off-by: Vladimir Lebedev <vladimir.p.lebedev@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 9 insertions, 11 deletions

diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c
index f58fc7447ab4..87b48f838164 100644
--- a/drivers/acpi/sbs.c
+++ b/drivers/acpi/sbs.c
@@ -1034,21 +1034,19 @@ static int acpi_battery_read_state(struct seq_file *seq, void *offset)
         } else {
                 seq_printf(seq, "capacity state:          ok\n");
         }
+
+        foo = (s16) battery->state.amperage * battery->info.ipscale;
+        if (battery->info.capacity_mode) {
+                foo = foo * battery->info.design_voltage / 1000;
+        }
         if (battery->state.amperage < 0) {
                 seq_printf(seq, "charging state:          discharging\n");
-                foo = battery->state.remaining_capacity * cscale * 60 /
-                    (battery->state.average_time_to_empty == 0 ? 1 :
-                     battery->state.average_time_to_empty);
-                seq_printf(seq, "present rate:            %i%s\n",
-                           foo, battery->info.capacity_mode ? "0 mW" : " mA");
+                seq_printf(seq, "present rate:            %d %s\n",
+                           -foo, battery->info.capacity_mode ? "mW" : "mA");
         } else if (battery->state.amperage > 0) {
                 seq_printf(seq, "charging state:          charging\n");
-                foo = (battery->info.full_charge_capacity -
-                       battery->state.remaining_capacity) * cscale * 60 /
-                    (battery->state.average_time_to_full == 0 ? 1 :
-                     battery->state.average_time_to_full);
-                seq_printf(seq, "present rate:            %i%s\n",
-                           foo, battery->info.capacity_mode ? "0 mW" : " mA");
+                seq_printf(seq, "present rate:            %d %s\n",
+                           foo, battery->info.capacity_mode ? "mW" : "mA");
         } else {
                 seq_printf(seq, "charging state:          charged\n");
                 seq_printf(seq, "present rate:            0 %s\n",