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| author | K. Y. Srinivasan <kys@microsoft.com> | 2015-01-09 23:54:33 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-01-25 09:17:58 -0800 |
| commit | 9f52a1630922bcdab75fc72e59ed58db8e164314 (patch) | |
| tree | d85a3decae84b9b5d36b606a5e38316730490fc3 /drivers/hv | |
| parent | 4061ed9e2aaac31daef44f06e9b83143c78b24b2 (diff) | |
| download | linux-9f52a1630922bcdab75fc72e59ed58db8e164314.tar.gz linux-9f52a1630922bcdab75fc72e59ed58db8e164314.tar.bz2 linux-9f52a1630922bcdab75fc72e59ed58db8e164314.zip | |
Drivers: hv: vmbus: Fix a bug in vmbus_establish_gpadl()
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv')
| -rw-r--r-- | 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 433f72a1c006..c76ffbe59f65 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) |