platform/x86: thinkpad_acpi: Fix multi-battery bug

The struct containing the supported operations for all batteries is
being zeroed on each battery probe.  This prevents all other batteries
except the lastly probed one from being configured.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index fd49855af110..0a118f462aa4 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -9374,7 +9374,9 @@ static int tpacpi_battery_probe(int battery)
 {
         int ret = 0;
 
-        memset(&battery_info, 0, sizeof(struct tpacpi_battery_driver_data));
+        memset(&battery_info.batteries[battery], 0,
+                sizeof(battery_info.batteries[battery]));
+
         /*
          * 1) Get the current start threshold
          * 2) Check for support
@@ -9620,6 +9622,8 @@ static const struct tpacpi_quirk battery_quirk_table[] __initconst = {
 
 static int __init tpacpi_battery_init(struct ibm_init_struct *ibm)
 {
+        memset(&battery_info, 0, sizeof(battery_info));
+
         tp_features.battery_force_primary = tpacpi_check_quirks(
                                         battery_quirk_table,
                                         ARRAY_SIZE(battery_quirk_table));