[PATCH] libata: fix smatch warning for zpodd_wake_dev

[Aaron Lu <aaron.lu@intel.com>]

Fix a smatch warning caused by an useless pointer check.
The context parameter (aka. ata_dev) will never be NULL until we remove
the acpi notification handler, so it is pointless to check it for NULL.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
---
 drivers/ata/libata-zpodd.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/ata/libata-zpodd.c b/drivers/ata/libata-zpodd.c
index 540b0b7..7c0204a 100644
--- a/drivers/ata/libata-zpodd.c
+++ b/drivers/ata/libata-zpodd.c
@@ -239,8 +239,7 @@ static void zpodd_wake_dev(acpi_handle handle, u32 event, void *context)
 	struct zpodd *zpodd = ata_dev->zpodd;
 	struct device *dev = &ata_dev->sdev->sdev_gendev;
 
-	if (event == ACPI_NOTIFY_DEVICE_WAKE && ata_dev &&
-			pm_runtime_suspended(dev)) {
+	if (event == ACPI_NOTIFY_DEVICE_WAKE && pm_runtime_suspended(dev)) {
 		zpodd->from_notify = true;
 		pm_runtime_resume(dev);
 	}
-- 
1.8.1