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Staging: hv: test return value of VmbusChannelEstablishGpadl() 

The return value of VmbusChannelEstablishGpadl() was not examined in
Channel.c

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Hank Janssen <hjanssen@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Bill Pemberton 2010-05-05 15:27:37 -04:00 committed by Greg Kroah-Hartman
parent 99259159c0
commit b94ef345b2
1 changed files with 8 additions and 3 deletions
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11
drivers/staging/hv/Channel.c
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@ -175,7 +175,7 @@ int VmbusChannelOpen(struct vmbus_channel *NewChannel, u32 SendRingBufferSize,
void (*OnChannelCallback)(void *context), void *Context)
{
struct vmbus_channel_open_channel *openMsg;
struct vmbus_channel_msginfo *openInfo;
struct vmbus_channel_msginfo *openInfo = NULL;
void *in, *out;
unsigned long flags;
int ret, err = 0;
@ -218,7 +218,11 @@ int VmbusChannelOpen(struct vmbus_channel *NewChannel, u32 SendRingBufferSize,
SendRingBufferSize +
RecvRingBufferSize,
&NewChannel->RingBufferGpadlHandle);
/* FIXME: the value of ret is not checked */
if (!ret) {
err = ret;
goto errorout;
}
DPRINT_DBG(VMBUS, "channel %p <relid %d gpadl 0x%x send ring %p "
"size %d recv ring %p size %d, downstreamoffset %d>",
@ -250,7 +254,6 @@ int VmbusChannelOpen(struct vmbus_channel *NewChannel, u32 SendRingBufferSize,
openMsg->OpenId = NewChannel->OfferMsg.ChildRelId; /* FIXME */
openMsg->ChildRelId = NewChannel->OfferMsg.ChildRelId;
openMsg->RingBufferGpadlHandle = NewChannel->RingBufferGpadlHandle;
ASSERT(openMsg->RingBufferGpadlHandle);
openMsg->DownstreamRingBufferPageOffset = SendRingBufferSize >>
PAGE_SHIFT;
openMsg->ServerContextAreaGpadlHandle = 0; /* TODO */
@ -295,6 +298,8 @@ Cleanup:
return 0;
errorout:
RingBufferCleanup(&NewChannel->Outbound);
RingBufferCleanup(&NewChannel->Inbound);
osd_PageFree(out, (SendRingBufferSize + RecvRingBufferSize)
>> PAGE_SHIFT);
kfree(openInfo);