From ed4b197ddd4d7aa6623e7777ea326c67c3a6b8ed Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Thu, 3 Jul 2014 00:35:09 +0100 Subject: [PATCH] ACPI / EC: Free saved_ec on error exit path 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 Acked-by: Lan Tianyu Signed-off-by: Rafael J. Wysocki --- 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 ff16132e5c52..a66ab658abbc 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -1069,8 +1069,10 @@ 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 */ @@ -1108,6 +1110,7 @@ int __init acpi_ec_ecdt_probe(void) } error: kfree(boot_ec); + kfree(saved_ec); boot_ec = NULL; return -ENODEV; } -- 2.45.2