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| author | Marcel Holtmann <marcel@holtmann.org> | 2007-06-13 08:02:11 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-07-12 16:34:38 -0700 |
| commit | 8b3b01c898a44c2fc7217eb579982b9d132113f5 (patch) | |
| tree | 4d7da145c0fa47243b0f67b62fcdfaa4f53d184e /drivers/usb/core/urb.c | |
| parent | 300871cd963e24a68aaa9b762f4a10403697d9be (diff) | |
| download | linux-8b3b01c898a44c2fc7217eb579982b9d132113f5.tar.gz linux-8b3b01c898a44c2fc7217eb579982b9d132113f5.tar.bz2 linux-8b3b01c898a44c2fc7217eb579982b9d132113f5.zip | |
USB: Add URB_FREE_BUFFER flag and the logic behind it
USB: Add URB_FREE_BUFFER flag for freeing the transfer buffer
In some cases it is not needed that the driver keeps track of the
transfer buffer of an URB. It can be simply freed along with the
URB itself when the reference count goes down to zero. The new
flag URB_FREE_BUFFER enables this behavior.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core/urb.c')
| -rw-r--r-- | drivers/usb/core/urb.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c index ac4273dddf34..52ec44b828f3 100644 --- a/drivers/usb/core/urb.c +++ b/drivers/usb/core/urb.c @@ -13,6 +13,9 @@ static void urb_destroy(struct kref *kref) { struct urb *urb = to_urb(kref); + if (urb->transfer_flags & URB_FREE_BUFFER) + kfree(urb->transfer_buffer); + kfree(urb); } |