ACPI: ec: add unlock in error path

Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 743ce27fa0bbf2915c78f4d18fdefecb1fdf133a..8f5aaf753fdac7d81b5772fe8f5bff1e186941ac 100644 (file)
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -280,8 +280,10 @@ static int acpi_ec_transaction(struct acpi_ec *ec, u8 command,
        mutex_lock(&ec->lock);
        if (ec->global_lock) {
                status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
-               if (ACPI_FAILURE(status))
+               if (ACPI_FAILURE(status)) {
+                       mutex_unlock(&ec->lock);
                        return -ENODEV;
+               }
        }
 
        /* Make sure GPE is enabled before doing transaction */