From: "K. Y. Srinivasan" <kys@microsoft.com>
To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org,
devel@linuxdriverproject.org, olaf@aepfle.de, apw@canonical.com,
jasowang@redhat.com, mcb30@ipxe.org
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Subject: [PATCH V3 1/1] Drivers: hv: vmbus: Fix a bug in vmbus_establish_gpadl()
Date: Wed, 10 Dec 2014 17:13:00 -0800 [thread overview]
Message-ID: <1418260380-8774-1-git-send-email-kys@microsoft.com> (raw)
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
next reply other threads:[~2014-12-11 0:02 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-11 1:13 K. Y. Srinivasan [this message]
2014-12-11 2:10 ` [PATCH V3 1/1] Drivers: hv: vmbus: Fix a bug in vmbus_establish_gpadl() Jeremiah Mahler
2014-12-15 7:00 ` KY Srinivasan
2014-12-15 7:59 ` Jeremiah Mahler
2014-12-15 15:47 ` Andy Whitcroft
2014-12-15 18:51 ` Jeremiah Mahler
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