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| author | Daniel Ritz <daniel.ritz@gmx.ch> | 2005-09-22 00:47:24 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-22 07:58:24 -0700 |
| commit | d305ef5d2a4e77bfa66160513f4a7494126a506b (patch) | |
| tree | f70f435571fb6c4d520fea0f3c769a2a6df73f84 | |
| parent | 4c898c7f2f286b204fefc5dddb568f755d195d0c (diff) | |
| download | linux-3.10-d305ef5d2a4e77bfa66160513f4a7494126a506b.tar.gz linux-3.10-d305ef5d2a4e77bfa66160513f4a7494126a506b.tar.bz2 linux-3.10-d305ef5d2a4e77bfa66160513f4a7494126a506b.zip | |
[PATCH] driver core: add helper device_is_registered()
add the helper and use it instead of open coding the klist_node_attached() check
(which is a layering violation IMHO)
idea by Alan Stern.
Signed-off-by: Daniel Ritz <daniel.ritz@gmx.ch>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | drivers/s390/cio/ccwgroup.c | 2 | ||||
| -rw-r--r-- | drivers/usb/core/message.c | 2 | ||||
| -rw-r--r-- | drivers/usb/core/usb.c | 6 | ||||
| -rw-r--r-- | include/linux/device.h | 5 |
4 files changed, 10 insertions, 5 deletions
diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c index 91ea8e4777f..dbb3eb0e330 100644 --- a/drivers/s390/cio/ccwgroup.c +++ b/drivers/s390/cio/ccwgroup.c @@ -437,7 +437,7 @@ __ccwgroup_get_gdev_by_cdev(struct ccw_device *cdev) if (cdev->dev.driver_data) { gdev = (struct ccwgroup_device *)cdev->dev.driver_data; if (get_device(&gdev->dev)) { - if (klist_node_attached(&gdev->dev.knode_bus)) + if (device_is_registered(&gdev->dev)) return gdev; put_device(&gdev->dev); } diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index c47c8052b48..f1fb67fe22a 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -987,7 +987,7 @@ void usb_disable_device(struct usb_device *dev, int skip_ep0) /* remove this interface if it has been registered */ interface = dev->actconfig->interface[i]; - if (!klist_node_attached(&interface->dev.knode_bus)) + if (!device_is_registered(&interface->dev)) continue; dev_dbg (&dev->dev, "unregistering interface %s\n", interface->dev.bus_id); diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 087af73a59d..7d131509e41 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -303,7 +303,7 @@ int usb_driver_claim_interface(struct usb_driver *driver, /* if interface was already added, bind now; else let * the future device_add() bind it, bypassing probe() */ - if (klist_node_attached(&dev->knode_bus)) + if (device_is_registered(dev)) device_bind_driver(dev); return 0; @@ -336,8 +336,8 @@ void usb_driver_release_interface(struct usb_driver *driver, if (iface->condition != USB_INTERFACE_BOUND) return; - /* release only after device_add() */ - if (klist_node_attached(&dev->knode_bus)) { + /* don't release if the interface hasn't been added yet */ + if (device_is_registered(dev)) { iface->condition = USB_INTERFACE_UNBINDING; device_release_driver(dev); } diff --git a/include/linux/device.h b/include/linux/device.h index 06e5d42f2c7..95d607a48f0 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -317,6 +317,11 @@ dev_set_drvdata (struct device *dev, void *data) dev->driver_data = data; } +static inline int device_is_registered(struct device *dev) +{ + return klist_node_attached(&dev->knode_bus); +} + /* * High level routines for use by the bus drivers */ |