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Subject[PATCH 1/1] Drivers: hv: vmbus: Fix a bug in vmbus_establish_gpadl()
Date
Fix a bug in vmbus_establish_gpadl(). I would like to
thank Michael Brown <mcb30@ipxe.org> for seeing this bug.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
drivers/hv/channel.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c
index 433f72a..c76ffbe 100644
--- a/drivers/hv/channel.c
+++ b/drivers/hv/channel.c
@@ -366,8 +366,8 @@ int vmbus_establish_gpadl(struct vmbus_channel *channel, void *kbuffer,
unsigned long flags;
int ret = 0;

- next_gpadl_handle = atomic_read(&vmbus_connection.next_gpadl_handle);
- atomic_inc(&vmbus_connection.next_gpadl_handle);
+ next_gpadl_handle =
+ (atomic_inc_return(&vmbus_connection.next_gpadl_handle) - 1);

ret = create_gpadl_header(kbuffer, size, &msginfo, &msgcount);
if (ret)
--
1.7.4.1


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