Re: [PATCH] add legacy resources to sysfs
From: Greg KH
Date: Tue Dec 21 2004 - 16:48:57 EST
On Tue, Dec 21, 2004 at 12:47:44PM -0800, Jesse Barnes wrote:
> Here's a rediff against Greg's current tree. It adds legacy_io and legacy_mem
> files to each PCI bus directory in sysfs for use by applications that want to
> do old school ISA style programming from userspace.
> I'm not sure I've got the sysfs file creation correct, Greg? Am I passing the
> wrong thing around? The compile warnings in pci-sysfs.c for the new routines
> seem to indicate that... Basically I need to get to a pci_bus structure from
> the read/write/mmap routines, and that should be accessible from the kobject
> somewhere, right?
You are passing the wrong things around :)
A struct pci_bus is a struct class_device, not a struct device. I think
you need to rethink your goal of putting the files into the pci device
directory, or just put the files into the proper /sys/class/pci_bus/*
directory as your code assumes is happening.
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