Message-Id: <200111201750.fAKHoYa03354@danapple.com>
To: linux-kernel@vger.kernel.org
Subject: built-in USB /proc bug
From: "Daniel I. Applebaum" <danapple@danapple.com>
Date: Tue, 20 Nov 2001 11:50:34 -0600
Sender: linux-kernel-owner@vger.kernel.org


I tried building a 2.4.13 kernel with USB support as built-in, instead
of modules.  The system worked, and USB devices worked, but there were
no entries in /proc/bus/usb Yes, I had enabled both /proc filesystem
and USB /proc filesystem support.  When the same kernel was built but
with USB support as modules, the /proc/bus/usb entries appear.

Although no expert in these matters, I suspect that when the USB
subsystem is built-in, it is initialized before /proc is mounted, and
the USB /proc filesystem support either turns itself off or puts the
"files" elsewhere.

A viable solution might be to have make menuconfig warn against this
combination.

Dan.

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