diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2009-07-08 12:27:37 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-01-06 15:04:55 -0800 |
| commit | af70ddfa0a21d625f1b7ed3389ce30eeed0896c3 (patch) | |
| tree | 8673b47eb2c292c806ba4c193580a3e6c36a053d /drivers/xen | |
| parent | 1dc51f1054ff6444540c3a3e45aad6657d130562 (diff) | |
xen: fix is_disconnected_device/exists_disconnected_device
commit c6e1971139be1342902873181f3b80a979bfb33b upstream.
The logic of is_disconnected_device/exists_disconnected_device is wrong
in that they are used to test whether a device is trying to connect (i.e.
connecting). For this reason the patch fixes them to not consider a
Closing or Closed device to be connecting. At the same time the patch
also renames the functions according to what they really do; you could
say a closed device is "disconnected" (the old name), but not "connecting"
(the new name).
This patch is a backport of changeset 909 from the Xenbits tree.
Cc: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/xen')
| -rw-r--r-- | drivers/xen/xenbus/xenbus_probe.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c index 3800da7dabfe..19bce3e1b333 100644 --- a/drivers/xen/xenbus/xenbus_probe.c +++ b/drivers/xen/xenbus/xenbus_probe.c @@ -843,7 +843,7 @@ postcore_initcall(xenbus_probe_init); MODULE_LICENSE("GPL"); -static int is_disconnected_device(struct device *dev, void *data) +static int is_device_connecting(struct device *dev, void *data) { struct xenbus_device *xendev = to_xenbus_device(dev); struct device_driver *drv = data; @@ -861,14 +861,15 @@ static int is_disconnected_device(struct device *dev, void *data) return 0; xendrv = to_xenbus_driver(dev->driver); - return (xendev->state != XenbusStateConnected || - (xendrv->is_ready && !xendrv->is_ready(xendev))); + return (xendev->state < XenbusStateConnected || + (xendev->state == XenbusStateConnected && + xendrv->is_ready && !xendrv->is_ready(xendev))); } -static int exists_disconnected_device(struct device_driver *drv) +static int exists_connecting_device(struct device_driver *drv) { return bus_for_each_dev(&xenbus_frontend.bus, NULL, drv, - is_disconnected_device); + is_device_connecting); } static int print_device_status(struct device *dev, void *data) @@ -918,7 +919,7 @@ static void wait_for_devices(struct xenbus_driver *xendrv) if (!ready_to_wait_for_devices || !xen_domain()) return; - while (exists_disconnected_device(drv)) { + while (exists_connecting_device(drv)) { if (time_after(jiffies, timeout)) break; schedule_timeout_interruptible(HZ/10); |