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of: Fix address decoding on Bimini and js2x machines

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commit 6dd18e4684 upstream.

 Commit:

  e38c0a1fbc
  of/address: Handle #address-cells > 2 specially

broke real time clock access on Bimini, js2x, and similar powerpc
machines using the "maple" platform. That code was indirectly relying
on the old (broken) behaviour of the translation for the hypertransport
to ISA bridge.

This fixes it by treating hypertransport as a PCI bus

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
Cc: Jonghwan Choi <jhbird.choi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Benjamin Herrenschmidt 2013-07-03 16:01:10 +10:00 committed by Greg Kroah-Hartman
parent 369cf4be75
commit a5ed6be766
1 changed files with 6 additions and 2 deletions
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8
drivers/of/address.c
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@ -106,8 +106,12 @@ static unsigned int of_bus_default_get_flags(const __be32 *addr)
static int of_bus_pci_match(struct device_node *np)
{
/* "vci" is for the /chaos bridge on 1st-gen PCI powermacs */
return !strcmp(np->type, "pci") || !strcmp(np->type, "vci");
/*
* "vci" is for the /chaos bridge on 1st-gen PCI powermacs
* "ht" is hypertransport
*/
return !strcmp(np->type, "pci") || !strcmp(np->type, "vci") ||
!strcmp(np->type, "ht");
}
static void of_bus_pci_count_cells(struct device_node *np,