[PATCH] 2.5->2.4 backport: PCMCIA crashes without CONFIG_ISA

[Pavel Roskin]

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Hello!

My patch to fix a crash in validate_mem() (drivers/pcmcia/rsrc_mgr.c)
without CONFIG_ISA defined
(http://lists.infradead.org/pipermail/linux-pcmcia/2003-April/000039.html)
has been in the 2.5 kernels for some time, and it turns out that it needs
to be applied to 2.4.x kernels as well.

The patch against 2.4.21-rc2-ac2 is attached.

validate_mem() traverses memory regions and calls do_mem_probe() on them.
do_mem_probe() can free the current region.  That's why the pointer to the
next region should be preserved before do_mem_probe() is called.

There are two versions of validate_mem().  The one used when CONFIG_ISA is
defined does the right thing.  However, this fix has not been propagated
to the simplified version of validate_mem(), which is used without
CONFIG_ISA defined.

The backport has been published in the PCMCIA mailing list:
http://lists.infradead.org/pipermail/linux-pcmcia/2003-May/000068.html

-- 
Regards,
Pavel Roskin
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