[libata] fix smatch warning for zpodd_wake_dev

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>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

diff --git a/drivers/ata/libata-zpodd.c b/drivers/ata/libata-zpodd.c
index a7df603..90b159b 100644 (file)
--- a/drivers/ata/libata-zpodd.c
+++ b/drivers/ata/libata-zpodd.c
@@ -246,8 +246,7 @@ 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);
        }