Messages in this thread Patch in this message | | | From | "K. Y. Srinivasan" <> | Subject | [PATCH V3 1/1] Drivers: hv: vmbus: Fix a bug in vmbus_establish_gpadl() | Date | Wed, 10 Dec 2014 17:13:00 -0800 |
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Correctly compute the local (gpadl) handle. I would like to thank Michael Brown <mcb30@ipxe.org> for seeing this bug.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reported-by: Michael Brown <mcb30@ipxe.org> --- Changes in V2: Added the Reported-by tag. Changes in V3: Cleaned up the commit log.
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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