Staging: hv: Fix null pointer error after vmbus loading

Fix null pointer error after vmbus loading. Remove code that checks for
dev_name, the affected structure is kzalloc-ed prior to this routine, so
it is always null at this stage.

Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 13 deletions

diff --git a/drivers/staging/hv/vmbus_drv.c b/drivers/staging/hv/vmbus_drv.c
index 582318f10222..270fb7f64d75 100644
--- a/drivers/staging/hv/vmbus_drv.c
+++ b/drivers/staging/hv/vmbus_drv.c
@@ -537,18 +537,7 @@ static int vmbus_child_device_register(struct hv_device *root_device_obj,
         DPRINT_DBG(VMBUS_DRV, "child device (%p) registering",
                    child_device_ctx);
 
-        /* Make sure we are not registered already */
-        if (strlen(dev_name(&child_device_ctx->device)) != 0) {
-                DPRINT_ERR(VMBUS_DRV,
-                           "child device (%p) already registered - busid %s",
-                           child_device_ctx,
-                           dev_name(&child_device_ctx->device));
-
-                ret = -1;
-                goto Cleanup;
-        }
-
-        /* Set the device bus id. Otherwise, device_register()will fail. */
+        /* Set the device name. Otherwise, device_register() will fail. */
         dev_set_name(&child_device_ctx->device, "vmbus_0_%d",
                      atomic_inc_return(&device_num));
 
@@ -573,7 +562,6 @@ static int vmbus_child_device_register(struct hv_device *root_device_obj,
                 DPRINT_INFO(VMBUS_DRV, "child device (%p) registered",
                             &child_device_ctx->device);
 
-Cleanup:
         DPRINT_EXIT(VMBUS_DRV);
 
         return ret;