commit 3958fb34ef18529c1e4a3eca44b7aaf94d4f4697
author Samuel Ortiz <samuel@sortiz.org> Mon Jan 15 19:37:25 2007 -0800
committer David S. Miller <davem@sunset.davemloft.net> Tue Jan 23 20:25:49 2007 -0800
tree e7ed13bfae551ed43e530148293e889998768c35
parent 9d0f7d29f38d4f7bf66d38d448a7d23e0bed9074

[IrDA]: irda-usb TX path optimization (was Re: IrDA spams logfiles - since 2.6.19)

Since we stop using dev_alloc_skb on the IrDA TX frame, we constantly run
into the case of the skb headroom being 0, and thus we call skb_cow for
every IrDA TX frame.
This patch uses a local buffer and memcpy the skb to it, saving us a
kmalloc for each of those IrDA TX frames.

Signed-off-by: Samuel Ortiz <samuel@sortiz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>