From: Paul Mackerras <paulus@linuxcare.com.au>
To: Ronald Wahl <rwa@peppercon.de>
Cc: linuxppc-dev@lists.linuxppc.org
Subject: Re: iounmap
Date: Fri, 4 Aug 2000 12:13:53 +1000 (EST) [thread overview]
Message-ID: <14730.9953.112006.773228@argo.linuxcare.com.au> (raw)
In-Reply-To: <Pine.LNX.4.21.0008030950020.1647-100000@goliath.issistance.de>
Ronald Wahl writes:
> I'm currently writing a device driver for an pci controller and have to
> map very large amounts of pci memory and i/o ranges via ioremap. The
> problem is that there is no iounmap and ioremap returns NULL after some
> insmod/rmmod cycles. When gets this implemented?
This should do the trick:
void iounmap(void *addr)
{
if (addr > high_memory && (unsigned long) addr < ioremap_bot)
vfree((void *) (PAGE_MASK & (unsigned long) addr));
}
Could you replace the null iounmap in arch/ppc/mm/init.c with that,
test it, and let me know if it works?
Paul.
--
Paul Mackerras, Senior Open Source Researcher, Linuxcare, Inc.
+61 2 6262 8990 tel, +61 2 6262 8991 fax
paulus@linuxcare.com.au, http://www.linuxcare.com.au/
Linuxcare. Support for the revolution.
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2000-08-04 2:13 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-08-03 8:00 iounmap Ronald Wahl
2000-08-03 12:44 ` iounmap Geert Uytterhoeven
2000-08-03 22:59 ` iounmap Matt Porter
2000-08-04 8:06 ` iounmap Ronald Wahl
2000-08-04 14:19 ` iounmap Matt Porter
2000-08-04 2:13 ` Paul Mackerras [this message]
2000-08-04 8:08 ` iounmap Ronald Wahl
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