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authorFernando Soto <fsoto@bluecatnetworks.com>2013-06-14 23:13:35 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-07-16 23:17:48 -0700
commit84672369ffb98a51d4ddf74c20a23636da3ad615 (patch)
tree7056581822656336ecaea96d1edbfd51211dfde3 /drivers
parentad81f0545ef01ea651886dddac4bef6cec930092 (diff)
Drivers: hv: vmbus: incorrect device name is printed when child device is unregistered
Whenever a device is unregistered in vmbus_device_unregister (drivers/hv/vmbus_drv.c), the device name in the log message may contain garbage as the memory has already been freed by the time pr_info is called. Log example: [ 3149.170475] hv_vmbus: child device àõsèè0_5 unregistered By logging the message just before calling device_unregister, the correct device name is printed: [ 3145.034652] hv_vmbus: child device vmbus_0_5 unregistered Also changing register & unregister messages to debug to avoid unnecessarily cluttering the kernel log. Signed-off-by: Fernando M Soto <fsoto@bluecatnetworks.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/hv/vmbus_drv.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index a2464bf07c49..e8e071fc1d6d 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -690,7 +690,7 @@ int vmbus_device_register(struct hv_device *child_device_obj)
if (ret)
pr_err("Unable to register child device\n");
else
- pr_info("child device %s registered\n",
+ pr_debug("child device %s registered\n",
dev_name(&child_device_obj->device));
return ret;
@@ -702,14 +702,14 @@ int vmbus_device_register(struct hv_device *child_device_obj)
*/
void vmbus_device_unregister(struct hv_device *device_obj)
{
+ pr_debug("child device %s unregistered\n",
+ dev_name(&device_obj->device));
+
/*
* Kick off the process of unregistering the device.
* This will call vmbus_remove() and eventually vmbus_device_release()
*/
device_unregister(&device_obj->device);
-
- pr_info("child device %s unregistered\n",
- dev_name(&device_obj->device));
}

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