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Linus Torvalds b4bbb02934 Revert "of/irq: of_irq_find_parent: check for parent equal to child" 
This reverts commit dc93728084.

As requested by Ben Herrenschmidt:
  "This breaks some powerpc platforms at least.  The practice of having
   a node provide an explicit "interrupt-parent" property pointing to
   itself is an old trick that we've used in the past to allow a
   device-node to have interrupts routed to different controllers.

   In that case, the node also contains an interrupt-map, so the node is
   its own parent, the interrupt resolution hits the map, which then can
   route each individual interrupt to a different parent."

Grant says:
  "Ah, nuts, yes that is broken then.  Yes, please revert the commit and
   Rob & I will come up with a better solution.

   Rob, I think it can be done by explicitly checking for np ==
   desc->interrupt_parent in of_irq_init() instead of relying on
   of_irq_find_parent() returning NULL."

Requested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: devicetree-discuss@lists.ozlabs.org
Cc: linuxppc-dev <linuxppc-dev@lists.ozlabs.org>
Cc: Tanmay Inamdar <tinamdar@apm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2011-11-22 15:09:20 -08:00
..
Kconfig pci/of: Match PCI devices to OF nodes dynamically 2011-06-08 09:08:17 +10:00
Makefile pci/of: Match PCI devices to OF nodes dynamically 2011-06-08 09:08:17 +10:00
address.c of: address: use resource_size helper 2011-08-01 12:55:02 +01:00
base.c Merge branch 'next/cleanup2' of git://git.linaro.org/people/arnd/arm-soc 2011-11-01 20:58:25 -07:00
device.c dt/powerpc: move of_bus_type infrastructure to ibmebus 2011-02-28 01:36:38 -07:00
fdt.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2011-11-06 17:12:03 -08:00
gpio.c of/gpio: export of_gpio_simple_xlate 2011-07-28 16:19:22 -06:00
irq.c Revert "of/irq: of_irq_find_parent: check for parent equal to child" 2011-11-22 15:09:20 -08:00
of_i2c.c of/i2c: Fix request module by alias 2010-12-24 01:28:54 -07:00
of_mdio.c of_mdio: Don't phy_scan_fixups() twice 2011-10-25 06:55:52 +02:00
of_net.c drivers/of: include export.h for EXPORT_SYMBOL_GPL/THIS_MODULE as required 2011-10-31 19:31:56 -04:00
of_pci.c of: of_pci.c needs export.h since it uses EXPORT_SYMBOLS 2011-10-31 19:31:14 -04:00
of_pci_irq.c drivers/of: include export.h for EXPORT_SYMBOL_GPL/THIS_MODULE as required 2011-10-31 19:31:56 -04:00
of_spi.c drivers/of: Add module.h to of_spi.c 2011-10-31 19:31:55 -04:00
pdt.c dt: add of_alias_scan and of_alias_get_id 2011-09-22 11:12:10 -06:00
platform.c dt/platform: minor cleanup 2011-11-03 15:49:24 -05:00