thinkpad_acpi: Fix a memory leak during module exit

We should free the thinkpad_id.nummodel_str during exit as it's allocated
in get_thinkpad_module_data().

Signed-off-by: Li Dongyang <Jerry87905@gmail.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index c85b66602ee1..ae203558ac90 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -8970,6 +8970,7 @@ static void thinkpad_acpi_module_exit(void)
         kfree(thinkpad_id.bios_version_str);
         kfree(thinkpad_id.ec_version_str);
         kfree(thinkpad_id.model_str);
+        kfree(thinkpad_id.nummodel_str);
 }