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path: root/drivers/staging/hv/channel.c
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Diffstat (limited to 'drivers/staging/hv/channel.c')
-rw-r--r--drivers/staging/hv/channel.c54
1 files changed, 2 insertions, 52 deletions
diff --git a/drivers/staging/hv/channel.c b/drivers/staging/hv/channel.c
index f047c5a7f64c..fece30c303a5 100644
--- a/drivers/staging/hv/channel.c
+++ b/drivers/staging/hv/channel.c
@@ -74,8 +74,6 @@ static void VmbusChannelSetEvent(struct vmbus_channel *Channel)
{
struct hv_monitor_page *monitorPage;
- DPRINT_ENTER(VMBUS);
-
if (Channel->OfferMsg.MonitorAllocated) {
/* Each u32 represents 32 channels */
set_bit(Channel->OfferMsg.ChildRelId & 31,
@@ -92,8 +90,6 @@ static void VmbusChannelSetEvent(struct vmbus_channel *Channel)
} else {
VmbusSetEvent(Channel->OfferMsg.ChildRelId);
}
-
- DPRINT_EXIT(VMBUS);
}
#if 0
@@ -101,8 +97,6 @@ static void VmbusChannelClearEvent(struct vmbus_channel *channel)
{
struct hv_monitor_page *monitorPage;
- DPRINT_ENTER(VMBUS);
-
if (Channel->OfferMsg.MonitorAllocated) {
/* Each u32 represents 32 channels */
clear_bit(Channel->OfferMsg.ChildRelId & 31,
@@ -117,8 +111,6 @@ static void VmbusChannelClearEvent(struct vmbus_channel *channel)
(unsigned long *)&monitorPage->TriggerGroup
[Channel->MonitorGroup].Pending);
}
-
- DPRINT_EXIT(VMBUS);
}
#endif
@@ -180,8 +172,6 @@ int VmbusChannelOpen(struct vmbus_channel *NewChannel, u32 SendRingBufferSize,
unsigned long flags;
int ret, err = 0;
- DPRINT_ENTER(VMBUS);
-
/* Aligned to page size */
/* ASSERT(!(SendRingBufferSize & (PAGE_SIZE - 1))); */
/* ASSERT(!(RecvRingBufferSize & (PAGE_SIZE - 1))); */
@@ -305,9 +295,6 @@ Cleanup:
kfree(openInfo->WaitEvent);
kfree(openInfo);
-
- DPRINT_EXIT(VMBUS);
-
return 0;
errorout:
@@ -465,6 +452,8 @@ static int VmbusChannelCreateGpadlHeader(void *Kbuffer, u32 Size,
sizeof(struct vmbus_channel_gpadl_header) +
sizeof(struct gpa_range) + pageCount * sizeof(u64);
msgHeader = kzalloc(msgSize, GFP_KERNEL);
+ if (msgHeader == NULL)
+ goto nomem;
msgHeader->MessageSize = msgSize;
gpaHeader = (struct vmbus_channel_gpadl_header *)msgHeader->Msg;
@@ -509,8 +498,6 @@ int VmbusChannelEstablishGpadl(struct vmbus_channel *Channel, void *Kbuffer,
unsigned long flags;
int ret = 0;
- DPRINT_ENTER(VMBUS);
-
nextGpadlHandle = atomic_read(&gVmbusConnection.NextGpadlHandle);
atomic_inc(&gVmbusConnection.NextGpadlHandle);
@@ -592,9 +579,6 @@ Cleanup:
kfree(msgInfo->WaitEvent);
kfree(msgInfo);
-
- DPRINT_EXIT(VMBUS);
-
return ret;
}
@@ -608,8 +592,6 @@ int VmbusChannelTeardownGpadl(struct vmbus_channel *Channel, u32 GpadlHandle)
unsigned long flags;
int ret;
- DPRINT_ENTER(VMBUS);
-
/* ASSERT(GpadlHandle != 0); */
info = kmalloc(sizeof(*info) +
@@ -650,9 +632,6 @@ int VmbusChannelTeardownGpadl(struct vmbus_channel *Channel, u32 GpadlHandle)
kfree(info->WaitEvent);
kfree(info);
-
- DPRINT_EXIT(VMBUS);
-
return ret;
}
@@ -666,8 +645,6 @@ void VmbusChannelClose(struct vmbus_channel *Channel)
unsigned long flags;
int ret;
- DPRINT_ENTER(VMBUS);
-
/* Stop callback and cancel the timer asap */
Channel->OnChannelCallback = NULL;
del_timer_sync(&Channel->poll_timer);
@@ -720,8 +697,6 @@ void VmbusChannelClose(struct vmbus_channel *Channel)
FreeVmbusChannel(Channel);
}
-
- DPRINT_EXIT(VMBUS);
}
/**
@@ -749,7 +724,6 @@ int VmbusChannelSendPacket(struct vmbus_channel *Channel, const void *Buffer,
u64 alignedData = 0;
int ret;
- DPRINT_ENTER(VMBUS);
DPRINT_DBG(VMBUS, "channel %p buffer %p len %d",
Channel, Buffer, BufferLen);
@@ -776,8 +750,6 @@ int VmbusChannelSendPacket(struct vmbus_channel *Channel, const void *Buffer,
if (ret == 0 && !GetRingBufferInterruptMask(&Channel->Outbound))
VmbusChannelSetEvent(Channel);
- DPRINT_EXIT(VMBUS);
-
return ret;
}
EXPORT_SYMBOL(VmbusChannelSendPacket);
@@ -800,8 +772,6 @@ int VmbusChannelSendPacketPageBuffer(struct vmbus_channel *Channel,
struct scatterlist bufferList[3];
u64 alignedData = 0;
- DPRINT_ENTER(VMBUS);
-
if (PageCount > MAX_PAGE_BUFFER_COUNT)
return -EINVAL;
@@ -844,8 +814,6 @@ int VmbusChannelSendPacketPageBuffer(struct vmbus_channel *Channel,
if (ret == 0 && !GetRingBufferInterruptMask(&Channel->Outbound))
VmbusChannelSetEvent(Channel);
- DPRINT_EXIT(VMBUS);
-
return ret;
}
@@ -867,8 +835,6 @@ int VmbusChannelSendPacketMultiPageBuffer(struct vmbus_channel *Channel,
u32 PfnCount = NUM_PAGES_SPANNED(MultiPageBuffer->Offset,
MultiPageBuffer->Length);
- DPRINT_ENTER(VMBUS);
-
DumpVmbusChannel(Channel);
DPRINT_DBG(VMBUS, "data buffer - offset %u len %u pfn count %u",
@@ -914,8 +880,6 @@ int VmbusChannelSendPacketMultiPageBuffer(struct vmbus_channel *Channel,
if (ret == 0 && !GetRingBufferInterruptMask(&Channel->Outbound))
VmbusChannelSetEvent(Channel);
- DPRINT_EXIT(VMBUS);
-
return ret;
}
@@ -942,8 +906,6 @@ int VmbusChannelRecvPacket(struct vmbus_channel *Channel, void *Buffer,
int ret;
unsigned long flags;
- DPRINT_ENTER(VMBUS);
-
*BufferActualLen = 0;
*RequestId = 0;
@@ -955,7 +917,6 @@ int VmbusChannelRecvPacket(struct vmbus_channel *Channel, void *Buffer,
spin_unlock_irqrestore(&Channel->inbound_lock, flags);
/* DPRINT_DBG(VMBUS, "nothing to read!!"); */
- DPRINT_EXIT(VMBUS);
return 0;
}
@@ -977,8 +938,6 @@ int VmbusChannelRecvPacket(struct vmbus_channel *Channel, void *Buffer,
DPRINT_ERR(VMBUS, "buffer too small - got %d needs %d",
BufferLen, userLen);
- DPRINT_EXIT(VMBUS);
-
return -1;
}
@@ -990,8 +949,6 @@ int VmbusChannelRecvPacket(struct vmbus_channel *Channel, void *Buffer,
spin_unlock_irqrestore(&Channel->inbound_lock, flags);
- DPRINT_EXIT(VMBUS);
-
return 0;
}
EXPORT_SYMBOL(VmbusChannelRecvPacket);
@@ -1009,8 +966,6 @@ int VmbusChannelRecvPacketRaw(struct vmbus_channel *Channel, void *Buffer,
int ret;
unsigned long flags;
- DPRINT_ENTER(VMBUS);
-
*BufferActualLen = 0;
*RequestId = 0;
@@ -1022,7 +977,6 @@ int VmbusChannelRecvPacketRaw(struct vmbus_channel *Channel, void *Buffer,
spin_unlock_irqrestore(&Channel->inbound_lock, flags);
/* DPRINT_DBG(VMBUS, "nothing to read!!"); */
- DPRINT_EXIT(VMBUS);
return 0;
}
@@ -1043,7 +997,6 @@ int VmbusChannelRecvPacketRaw(struct vmbus_channel *Channel, void *Buffer,
DPRINT_ERR(VMBUS, "buffer too small - needed %d bytes but "
"got space for only %d bytes", packetLen, BufferLen);
- DPRINT_EXIT(VMBUS);
return -2;
}
@@ -1053,9 +1006,6 @@ int VmbusChannelRecvPacketRaw(struct vmbus_channel *Channel, void *Buffer,
ret = RingBufferRead(&Channel->Inbound, Buffer, packetLen, 0);
spin_unlock_irqrestore(&Channel->inbound_lock, flags);
-
- DPRINT_EXIT(VMBUS);
-
return 0;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.