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Staging: hv: util: Deal with driver register failures 

Properly deal with vmbus_driver_register() failures.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
K. Y. Srinivasan 2011-08-31 14:35:54 -07:00 committed by Greg Kroah-Hartman
parent 06b3f44a97
commit d531babe82
1 changed files with 16 additions and 5 deletions
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21
drivers/staging/hv/hv_util.c
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@ -277,6 +277,7 @@ static struct hv_driver util_drv = {
static int __init init_hyperv_utils(void)
{
int ret;
pr_info("Registering HyperV Utility Driver\n");
if (hv_kvp_init())
@ -289,12 +290,15 @@ static int __init init_hyperv_utils(void)
if (!shut_txf_buf || !time_txf_buf || !hbeat_txf_buf) {
pr_info("Unable to allocate memory for receive buffer\n");
kfree(shut_txf_buf);
kfree(time_txf_buf);
kfree(hbeat_txf_buf);
return -ENOMEM;
ret = -ENOMEM;
goto err;
}
ret = vmbus_driver_register(&util_drv);
if (ret != 0)
goto err;
hv_cb_utils[HV_SHUTDOWN_MSG].callback = &shutdown_onchannelcallback;
hv_cb_utils[HV_TIMESYNC_MSG].callback = &timesync_onchannelcallback;
@ -303,7 +307,14 @@ static int __init init_hyperv_utils(void)
hv_cb_utils[HV_KVP_MSG].callback = &hv_kvp_onchannelcallback;
return vmbus_driver_register(&util_drv);
return 0;
err:
kfree(shut_txf_buf);
kfree(time_txf_buf);
kfree(hbeat_txf_buf);
return ret;
}
static void exit_hyperv_utils(void)