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SubjectRe: 2.4.17-pre2 & PCMCIA Errors
Alan Ford writes:

> Just tried 2.4.17-pre2 (was previously on 2.4.16-pre1) and when pcmcia-cs is
> started on bootup, the following happens:
>
> cs: IO port probe 0x0c00-0x0cff: clean.
> cs: IO port probe 0x0100-0x04ff: excluding 0x4d0-0x4d7
> cs: IO port probe 0x0a00-0x0aff: clean.
> cs: memory probe 0xa0000000-0xa0ffffff:<1>Unable to handle kernel NULL pointer
> dereference at virtual address 00000004

Please try this patch and let me know whether it fixes the problem.

Paul.

diff -urN linux-2.4.17-pre2/drivers/pcmcia/rsrc_mgr.c pmac/drivers/pcmcia/rsrc_mgr.c
--- linux-2.4.17-pre2/drivers/pcmcia/rsrc_mgr.c Sat Dec 1 15:49:24 2001
+++ pmac/drivers/pcmcia/rsrc_mgr.c Mon Dec 3 14:28:16 2001
@@ -107,17 +107,19 @@
static struct resource *resource_parent(unsigned long b, unsigned long n,
int flags, struct pci_dev *dev)
{
- struct resource res;
+ struct resource res, *pr;

- if (dev == NULL) {
- if (flags & IORESOURCE_MEM)
- return &iomem_resource;
- return &ioport_resource;
+ if (dev != NULL) {
+ res.start = b;
+ res.end = b + n - 1;
+ res.flags = flags;
+ pr = pci_find_parent_resource(dev, &res);
+ if (pr)
+ return pr;
}
- res.start = b;
- res.end = b + n - 1;
- res.flags = flags;
- return pci_find_parent_resource(dev, &res);
+ if (flags & IORESOURCE_MEM)
+ return &iomem_resource;
+ return &ioport_resource;
}

static inline int check_io_resource(unsigned long b, unsigned long n,
-
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