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| author | Paolo Bonzini <pbonzini@redhat.com> | 2009-07-08 12:27:37 +0200 |
|---|---|---|
| committer | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2009-12-03 11:14:48 -0800 |
| commit | c6e1971139be1342902873181f3b80a979bfb33b (patch) | |
| tree | b3e53ed67c4cdca56a42ffffd30abc6cfe6b25b5 /drivers/xen | |
| parent | db05fed0ad72f264e39bcb366795f7367384ec92 (diff) | |
| download | linux-c6e1971139be1342902873181f3b80a979bfb33b.tar.gz linux-c6e1971139be1342902873181f3b80a979bfb33b.tar.bz2 linux-c6e1971139be1342902873181f3b80a979bfb33b.zip | |
xen: fix is_disconnected_device/exists_disconnected_device
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>
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); |