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xen/xenbus: Correct the comments for xenbus_grant_ring()

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A grant reference (which is a positive number) can indicate success, so
the original comments need be improved.

Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
This commit is contained in:
Chen Gang 2014-09-26 23:34:29 +08:00 committed by David Vrabel
parent a2ef5dc2c7
commit c7440a2f22
1 changed files with 2 additions and 2 deletions
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4
drivers/xen/xenbus/xenbus_client.c
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@ -361,8 +361,8 @@ static void xenbus_switch_fatal(struct xenbus_device *dev, int depth, int err,
* @ring_mfn: mfn of ring to grant
* Grant access to the given @ring_mfn to the peer of the given device. Return
* 0 on success, or -errno on error. On error, the device will switch to
* XenbusStateClosing, and the error will be saved in the store.
* a grant reference on success, or -errno on error. On error, the device will
* switch to XenbusStateClosing, and the error will be saved in the store.
*/
int xenbus_grant_ring(struct xenbus_device *dev, unsigned long ring_mfn)
{