[PATCH] ppc64: test for EEH error in PCI Config-Read path

[PATCH] ppc64: test for EEH error in PCI Config-Read path

This patch adds explicit checking for EEH slot isolation events into the
PCI config space read path.  The change itself would have been minor,
except that pci config reads don't have a pointer to a struct pci_dev.
Thus, I had to restructure the eeh code to accomodate this, which seems to
be a good thing anyway, making it a tad cleaner.

Signed-off-by: Linas Vepstas <linas@linas.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>