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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: linuxppc-dev@ozlabs.org
Subject: [PATCH 13/14] powerpc/powernv/pci: Check status of a PHB before using it
Date: Fri,  8 Jul 2016 16:37:17 +1000	[thread overview]
Message-ID: <1467959838-6900-13-git-send-email-benh@kernel.crashing.org> (raw)
In-Reply-To: <1467959838-6900-1-git-send-email-benh@kernel.crashing.org>

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>
---
 arch/powerpc/platforms/powernv/pci-ioda.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index b48c130..f975d19 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -3655,6 +3655,9 @@ 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));
 
-- 
2.7.4

  parent reply	other threads:[~2016-07-08  6:37 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-08  6:37 [PATCH 01/14] powerpc/powernv: Add XICS emulation APIs Benjamin Herrenschmidt
2016-07-08  6:37 ` [PATCH 02/14] powerpc/irq: Add support for HV virtualization interrupts Benjamin Herrenschmidt
2016-07-16 10:40   ` Michael Ellerman
2016-07-16 21:33     ` Benjamin Herrenschmidt
2016-07-16 22:55       ` Benjamin Herrenschmidt
2016-07-08  6:37 ` [PATCH 03/14] powerpc/irq: Add mechanism to force a replay of interrupts Benjamin Herrenschmidt
2016-07-08  6:37 ` [PATCH 04/14] powerpc/xics: Add ICP OPAL backend Benjamin Herrenschmidt
2016-07-08  6:37 ` [PATCH 05/14] powerpc/powernv: Discover IODA3 PHBs Benjamin Herrenschmidt
2016-07-08  6:37 ` [PATCH 06/14] powerpc/pseries/pci: Remove obsolete SW invalidate Benjamin Herrenschmidt
2016-07-08  6:37 ` [PATCH 07/14] powerpc/opal: Add real mode call wrappers Benjamin Herrenschmidt
2016-07-08  6:37 ` [PATCH 08/14] powerpc/powernv/pci: Rename TCE invalidation calls Benjamin Herrenschmidt
2016-07-08  6:37 ` [PATCH 09/14] powerpc/powernv/pci: Remove SWINV constants and obsolete TCE code Benjamin Herrenschmidt
2016-07-08  6:37 ` [PATCH 10/14] powerpc/powernv/pci: Rework accessing the TCE invalidate register Benjamin Herrenschmidt
2016-07-08  6:37 ` [PATCH 11/14] powerpc/powernv/pci: Fallback to OPAL for TCE invalidations Benjamin Herrenschmidt
2016-07-08  8:28   ` [PATCH v2 " Benjamin Herrenschmidt
2016-07-08  6:37 ` [PATCH 12/14] powerpc/powernv/pci: Use the device-tree to get available range of M64's Benjamin Herrenschmidt
2016-07-08  6:37 ` Benjamin Herrenschmidt [this message]
2016-07-08  6:37 ` [PATCH 14/14] powerpc/pci: Don't try to allocate resources that will be reassigned Benjamin Herrenschmidt
2016-07-12  6:52 ` [PATCH 01/14] powerpc/powernv: Add XICS emulation APIs Stewart Smith
2016-07-17 10:28 ` [01/14] " Michael Ellerman

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