Re: 2.1.20/ne2000: Tx request while isr active

Alan Cox (
Mon, 31 Mar 1997 20:12:25 +0100 (BST)

> delete intr_count altogether as it is a brain damaged concept
> especially with the new SMP code. Any instance you see referencing
> intr_count in the traditional send, ie.

The networking case is very different. The entire networking setup currently
assumes that an irq is not pre-empted by a BH or user, a bh is not pre-empted by
user space and two bh's may not run together. The tty code is evey tighter
on these assumptions.

The change given at least fixes the breakage of the assumption. Perhaps
2.1.31 someone cares to fix the assumption in about 50 drivers before breaking
it ?