[PATCH 5.4 16/85] platform/x86: thinkpad_acpi: initialize tp_nvram_state variable

[Greg Kroah-Hartman]

From: Tom Rix <t...@redhat.com>

commit 5f38b06db8af3ed6c2fc1b427504ca56fae2eacc upstream.

clang static analysis flags this represenative problem
thinkpad_acpi.c:2523:7: warning: Branch condition evaluates
  to a garbage value
                if (!oldn->mute ||
                    ^~~~~~~~~~~

In hotkey_kthread() mute is conditionally set by hotkey_read_nvram()
but unconditionally checked by hotkey_compare_and_issue_event().
So the tp_nvram_state variable s[2] needs to be initialized.

Fixes: 01e88f25985d ("ACPI: thinkpad-acpi: add CMOS NVRAM polling for hot keys 
(v9)")
Signed-off-by: Tom Rix <t...@redhat.com>
Reviewed-by: Hans de Goede <hdego...@redhat.com>
Acked-by: mark gross <mgr...@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevche...@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/platform/x86/thinkpad_acpi.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -2587,7 +2587,7 @@ static void hotkey_compare_and_issue_eve
  */
 static int hotkey_kthread(void *data)
 {
-       struct tp_nvram_state s[2];
+       struct tp_nvram_state s[2] = { 0 };
        u32 poll_mask, event_mask;
        unsigned int si, so;
        unsigned long t;