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powerpc/powernv/pci: Check status of a PHB before using it

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If the firmware encounters an error (internal or HW) during initialization
of a PHB, it might leave the device-node in the tree but mark it disabled
using the "status" property. We should check it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Benjamin Herrenschmidt 2016-07-08 16:37:17 +10:00 committed by Michael Ellerman
parent a1339faf72
commit 08a45b320a
1 changed files with 3 additions and 0 deletions
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3
arch/powerpc/platforms/powernv/pci-ioda.c
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@ -3516,6 +3516,9 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np,
void *aux;
long rc;
if (!of_device_is_available(np))
return;
pr_info("Initializing %s PHB (%s)\n",
pnv_phb_names[ioda_type], of_node_full_name(np));