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Staging: hv: check return value of device_register() 

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Bill Pemberton 2009-07-27 16:47:36 -04:00 committed by Greg Kroah-Hartman
parent c19fbca307
commit 5d48a1c202
5 changed files with 21 additions and 8 deletions
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2
drivers/staging/hv/blkvsc_drv.c
View File

@ -192,7 +192,7 @@ int blkvsc_drv_init(PFN_DRIVERINITIALIZE pfn_drv_init)
drv_ctx->shutdown = blkvsc_shutdown;
/* The driver belongs to vmbus */
vmbus_child_driver_register(drv_ctx);
ret = vmbus_child_driver_register(drv_ctx);
DPRINT_EXIT(BLKVSC_DRV);

3
drivers/staging/hv/include/vmbus.h
View File

@ -82,8 +82,7 @@ static inline struct driver_context *driver_to_driver_context(struct device_driv
/* Vmbus interface */
void
vmbus_child_driver_register(
int vmbus_child_driver_register(
struct driver_context* driver_ctx
);

2
drivers/staging/hv/netvsc_drv.c
View File

@ -114,7 +114,7 @@ int netvsc_drv_init(PFN_DRIVERINITIALIZE pfn_drv_init)
drv_ctx->remove = netvsc_remove;
/* The driver belongs to vmbus */
vmbus_child_driver_register(drv_ctx);
ret = vmbus_child_driver_register(drv_ctx);
DPRINT_EXIT(NETVSC_DRV);

2
drivers/staging/hv/storvsc_drv.c
View File

@ -162,7 +162,7 @@ int storvsc_drv_init(PFN_DRIVERINITIALIZE pfn_drv_init)
drv_ctx->remove = storvsc_remove;
/* The driver belongs to vmbus */
vmbus_child_driver_register(drv_ctx);
ret = vmbus_child_driver_register(drv_ctx);
DPRINT_EXIT(STORVSC_DRV);

20
drivers/staging/hv/vmbus_drv.c
View File

@ -435,7 +435,18 @@ int vmbus_bus_init(PFN_DRIVERINITIALIZE pfn_drv_init)
dev_ctx->device.release = vmbus_bus_release;
/* Setup the bus as root device */
device_register(&dev_ctx->device);
ret = device_register(&dev_ctx->device);
if (ret)
{
DPRINT_ERR(VMBUS_DRV, "ERROR - Unable to register vmbus root device");
free_irq(vmbus_irq, NULL);
bus_unregister(&vmbus_drv_ctx->bus);
ret = -1;
goto cleanup;
}
vmbus_drv_obj->GetChannelOffers();
@ -491,9 +502,10 @@ Name: vmbus_child_driver_register()
Desc: Register a vmbus's child driver
--*/
void vmbus_child_driver_register(struct driver_context* driver_ctx)
int vmbus_child_driver_register(struct driver_context* driver_ctx)
{
VMBUS_DRIVER_OBJECT *vmbus_drv_obj=&g_vmbus_drv.drv_obj;
int ret;
DPRINT_ENTER(VMBUS_DRV);
@ -502,11 +514,13 @@ void vmbus_child_driver_register(struct driver_context* driver_ctx)
/* The child driver on this vmbus */
driver_ctx->driver.bus = &g_vmbus_drv.bus;
driver_register(&driver_ctx->driver);
ret = driver_register(&driver_ctx->driver);
vmbus_drv_obj->GetChannelOffers();
DPRINT_EXIT(VMBUS_DRV);
return ret;
}
EXPORT_SYMBOL(vmbus_child_driver_register);