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Char/Misc driver fixes for 3.8-rc4

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Here are two hyperv patches for 3.8-rc4 that fix some reported problems
 hv_balloon driver.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg Kroah-Hartman:
 "Here are two hyperv patches for 3.8-rc4 that fix some reported
  problems hv_balloon driver"

* tag 'char-misc-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  Drivers: hv: balloon: Fix a memory leak
  Drivers: hv: balloon: Fix a bug in the definition of struct dm_info_msg
This commit is contained in:
Linus Torvalds 2013-01-18 14:04:50 -08:00
commit 0d060d28d8
1 changed files with 21 additions and 14 deletions
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35
drivers/hv/hv_balloon.c
View File

@ -403,7 +403,7 @@ struct dm_info_header {
*/
struct dm_info_msg {
struct dm_info_header header;
struct dm_header hdr;
__u32 reserved;
__u32 info_size;
__u8 info[];
@ -503,13 +503,17 @@ static void hot_add_req(struct hv_dynmem_device *dm, struct dm_hot_add *msg)
static void process_info(struct hv_dynmem_device *dm, struct dm_info_msg *msg)
{
switch (msg->header.type) {
struct dm_info_header *info_hdr;
info_hdr = (struct dm_info_header *)msg->info;
switch (info_hdr->type) {
case INFO_TYPE_MAX_PAGE_CNT:
pr_info("Received INFO_TYPE_MAX_PAGE_CNT\n");
pr_info("Data Size is %d\n", msg->header.data_size);
pr_info("Data Size is %d\n", info_hdr->data_size);
break;
default:
pr_info("Received Unknown type: %d\n", msg->header.type);
pr_info("Received Unknown type: %d\n", info_hdr->type);
}
}
@ -879,7 +883,7 @@ static int balloon_probe(struct hv_device *dev,
balloon_onchannelcallback, dev);
if (ret)
return ret;
goto probe_error0;
dm_device.dev = dev;
dm_device.state = DM_INITIALIZING;
@ -891,7 +895,7 @@ static int balloon_probe(struct hv_device *dev,
kthread_run(dm_thread_func, &dm_device, "hv_balloon");
if (IS_ERR(dm_device.thread)) {
ret = PTR_ERR(dm_device.thread);
goto probe_error0;
goto probe_error1;
}
hv_set_drvdata(dev, &dm_device);
@ -914,12 +918,12 @@ static int balloon_probe(struct hv_device *dev,
VM_PKT_DATA_INBAND,
VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
if (ret)
goto probe_error1;
goto probe_error2;
t = wait_for_completion_timeout(&dm_device.host_event, 5*HZ);
if (t == 0) {
ret = -ETIMEDOUT;
goto probe_error1;
goto probe_error2;
}
/*
@ -928,7 +932,7 @@ static int balloon_probe(struct hv_device *dev,
*/
if (dm_device.state == DM_INIT_ERROR) {
ret = -ETIMEDOUT;
goto probe_error1;
goto probe_error2;
}
/*
* Now submit our capabilities to the host.
@ -961,12 +965,12 @@ static int balloon_probe(struct hv_device *dev,
VM_PKT_DATA_INBAND,
VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
if (ret)
goto probe_error1;
goto probe_error2;
t = wait_for_completion_timeout(&dm_device.host_event, 5*HZ);
if (t == 0) {
ret = -ETIMEDOUT;
goto probe_error1;
goto probe_error2;
}
/*
@ -975,18 +979,20 @@ static int balloon_probe(struct hv_device *dev,
*/
if (dm_device.state == DM_INIT_ERROR) {
ret = -ETIMEDOUT;
goto probe_error1;
goto probe_error2;
}
dm_device.state = DM_INITIALIZED;
return 0;
probe_error1:
probe_error2:
kthread_stop(dm_device.thread);
probe_error0:
probe_error1:
vmbus_close(dev->channel);
probe_error0:
kfree(send_buffer);
return ret;
}
@ -999,6 +1005,7 @@ static int balloon_remove(struct hv_device *dev)
vmbus_close(dev->channel);
kthread_stop(dm->thread);
kfree(send_buffer);
return 0;
}