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| author | K. Y. Srinivasan <kys@microsoft.com> | 2015-02-28 11:18:16 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-01 19:31:02 -0800 |
| commit | d15a0301c4157884d1a48a5d76b9ac3e36d71242 (patch) | |
| tree | 8604ba0a730d1610743b1dc4818564cac4a602b3 | |
| parent | 04653a009a63d6a91c60a5449ea97e3ed5e1dc29 (diff) | |
| download | linux-d15a0301c4157884d1a48a5d76b9ac3e36d71242.tar.gz | |
Drivers: hv: vmbus: Properly handle child device remove
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>
| -rw-r--r-- | drivers/hv/vmbus_drv.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 6d99aa5c49d6..a12666d075ea 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -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; } |