From: Colin Ian King <[email protected]>

Smatch detected two memory leaks on saved_ec:

drivers/acpi/ec.c:1070 acpi_ec_ecdt_probe() warn: possible
  memory leak of 'saved_ec'
drivers/acpi/ec.c:1109 acpi_ec_ecdt_probe() warn: possible
  memory leak of 'saved_ec'

Free saved_ec on these two error exit paths to stop the memory
leak.  Note that saved_ec maybe null, but kfree on null is allowed.

Signed-off-by: Colin Ian King <[email protected]>
---
 drivers/acpi/ec.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index ad11ba4..9800f50 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -1066,8 +1066,10 @@ int __init acpi_ec_ecdt_probe(void)
        /* fall through */
        }
 
-       if (EC_FLAGS_SKIP_DSDT_SCAN)
+       if (EC_FLAGS_SKIP_DSDT_SCAN) {
+               kfree(saved_ec);
                return -ENODEV;
+       }
 
        /* This workaround is needed only on some broken machines,
         * which require early EC, but fail to provide ECDT */
@@ -1105,6 +1107,7 @@ install:
        }
 error:
        kfree(boot_ec);
+       kfree(saved_ec);
        boot_ec = NULL;
        return -ENODEV;
 }
-- 
2.0.1

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