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SubjectRe: [PATCH net-next 2/3] xen-netback: switch state to InitWait at the end of netback_probe()...
From: Paul Durrant <>
Date: Tue, 17 Dec 2019 13:32:17 +0000

> the comment above the function states.
> The switch to Initialising at the start of the function is somewhat bogus
> as the toolstack will have set that initial state anyway. To behave
> correctly, a backend should switch to InitWait once it has set up all
> xenstore values that may be required by a initialising frontend. This
> patch calls backend_switch_state() to make the transition at the
> appropriate point.
> NOTE: backend_switch_state() ignores errors from xenbus_switch_state()
> and so this patch removes an error path from netback_probe(). This
> means a failure to change state at this stage (in the absence of
> other failures) will leave the device instantiated. This is highly
> unlikley to happen as a failure to change state would indicate a
> failure to write to xenstore, and that will trigger other error
> paths. Also, a 'stuck' device can still be cleaned up using 'unbind'
> in any case.
> Signed-off-by: Paul Durrant <>


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