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authorDan Carpenter <dan.carpenter@oracle.com>2016-05-05 16:23:04 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-09-07 08:30:01 +0200
commitc6c94205010d5bb4bcac3916c3433cd5da440e46 (patch)
treeb5f1fb6c514e151ce81f01191bab2e66a201d246
parent425e96af3c8b5a82316b4a7ec1b3b17e59fcb295 (diff)
ACPI / sysfs: fix error code in get_status()
commit f18ebc211e259d4f591e39e74b2aa2de226c9a1d upstream. The problem with ornamental, do-nothing gotos is that they lead to "forgot to set the error code" bugs. We should be returning -EINVAL here but we don't. It leads to an uninitalized variable in counter_show(): drivers/acpi/sysfs.c:603 counter_show() error: uninitialized symbol 'status'. Fixes: 1c8fce27e275 (ACPI: introduce drivers/acpi/sysfs.c) Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/acpi/sysfs.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
index 91a32cefb11f..684baf937c7c 100644
--- a/drivers/acpi/sysfs.c
+++ b/drivers/acpi/sysfs.c
@@ -494,23 +494,22 @@ static void acpi_global_event_handler(u32 event_type, acpi_handle device,
static int get_status(u32 index, acpi_event_status *status,
acpi_handle *handle)
{
- int result = 0;
+ int result;
if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
- goto end;
+ return -EINVAL;
if (index < num_gpes) {
result = acpi_get_gpe_device(index, handle);
if (result) {
ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND,
"Invalid GPE 0x%x", index));
- goto end;
+ return result;
}
result = acpi_get_gpe_status(*handle, index, status);
} else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS))
result = acpi_get_event_status(index - num_gpes, status);
-end:
return result;
}