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driver core: add BUS_NOTIFY_UNBOUND_DRIVER event

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This patch adds a new bus notifier event which is emitted _after_ a
device is removed from its driver. This event will be used by the
dma-api debug code to check if a driver has released all dma allocations
for that device.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Joerg Roedel 2009-04-24 14:57:00 +02:00 • committed by Greg Kroah-Hartman
parent 6acf70f078
commit 309b7d60a3
2 changed files with 6 additions and 0 deletions
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include/linux/device.h
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@ -114,6 +114,8 @@ extern int bus_unregister_notifier(struct bus_type *bus,
#define BUS_NOTIFY_BOUND_DRIVER 0x00000003 /* driver bound to device */
#define BUS_NOTIFY_UNBIND_DRIVER 0x00000004 /* driver about to be
unbound */
#define BUS_NOTIFY_UNBOUND_DRIVER 0x00000005 /* driver is unbound
from the device */
extern struct kset *bus_get_kset(struct bus_type *bus);
extern struct klist *bus_get_device_klist(struct bus_type *bus);