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Drivers: hv: vmbus: Properly handle child device remove

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Handle the case when the device may be removed when the device has no driver
attached to it.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
K. Y. Srinivasan 2015-02-28 11:18:16 -08:00 committed by Greg Kroah-Hartman
parent 04653a009a
commit d15a0301c4
1 changed files with 9 additions and 6 deletions
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15
drivers/hv/vmbus_drv.c
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@ -508,14 +508,17 @@ static int vmbus_probe(struct device *child_device)
*/
static int vmbus_remove(struct device *child_device)
{
struct hv_driver *drv = drv_to_hv_drv(child_device->driver);
struct hv_driver *drv;
struct hv_device *dev = device_to_hv_device(child_device);
if (drv->remove)
drv->remove(dev);
else
pr_err("remove not set for driver %s\n",
dev_name(child_device));
if (child_device->driver) {
drv = drv_to_hv_drv(child_device->driver);
if (drv->remove)
drv->remove(dev);
else
pr_err("remove not set for driver %s\n",
dev_name(child_device));
}
return 0;
}