From: "Daniel I. Applebaum" <danapple@danapple.com>
To: linux-kernel@vger.kernel.org
Subject: built-in USB /proc bug
Date: Tue, 20 Nov 2001 11:50:34 -0600 [thread overview]
Message-ID: <200111201750.fAKHoYa03354@danapple.com> (raw)
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.
next reply other threads:[~2001-11-20 17:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-11-20 17:50 Daniel I. Applebaum [this message]
2001-11-20 18:37 ` built-in USB /proc bug Johannes Erdfelt
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