From: Tom Rix trix@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 trix@redhat.com Reviewed-by: Hans de Goede hdegoede@redhat.com Acked-by: mark gross mgross@linux.intel.com Signed-off-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman gregkh@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 @@ -2569,7 +2569,7 @@ 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;