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| author | Alan Stern <stern@rowland.harvard.edu> | 2005-11-17 17:10:32 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-01-04 13:48:34 -0800 |
| commit | 9ad3d6ccf5eee285e233dbaf186369b8d477a666 (patch) | |
| tree | 4ad43518e01f1b2c6513e79b318d974979041b99 /drivers/usb/core/usb.h | |
| parent | 75318d2d7cab77b14c5d3dbd5e69f2680a769e16 (diff) | |
| download | linux-9ad3d6ccf5eee285e233dbaf186369b8d477a666.tar.bz2 | |
[PATCH] USB: Remove USB private semaphore
This patch (as605) removes the private udev->serialize semaphore,
relying instead on the locking provided by the embedded struct device's
semaphore. The changes are confined to the core, except that the
usb_trylock_device routine now uses the return convention of
down_trylock rather than down_read_trylock (they return opposite values
for no good reason).
A couple of other associated changes are included as well:
Now that we aren't concerned about HCDs that avoid using the
hcd glue layer, usb_disconnect no longer needs to acquire the
usb_bus_lock -- that can be done by usb_remove_hcd where it
belongs.
Devices aren't locked over the same scope of code in
usb_new_device and hub_port_connect_change as they used to be.
This shouldn't cause any trouble.
Along with the preceding driver core patch, this needs a lot of testing.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core/usb.h')
| -rw-r--r-- | drivers/usb/core/usb.h | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index 98e85fb4d3b7..4647e1ebc68d 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -16,9 +16,6 @@ extern int usb_get_device_descriptor(struct usb_device *dev, extern char *usb_cache_string(struct usb_device *udev, int index); extern int usb_set_configuration(struct usb_device *dev, int configuration); -extern void usb_lock_all_devices(void); -extern void usb_unlock_all_devices(void); - extern void usb_kick_khubd(struct usb_device *dev); extern void usb_suspend_root_hub(struct usb_device *hdev); extern void usb_resume_root_hub(struct usb_device *dev); |