linux-kernel - [tip:irq/core] PCI/vmd: Create named irq domain

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Date:   Thu, 22 Jun 2017 09:47:57 -0700
From:   tip-bot for Thomas Gleixner <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     bhelgaas@...gle.com, linux-kernel@...r.kernel.org,
        mpe@...erman.id.au, mingo@...nel.org, keith.busch@...el.com,
        hpa@...or.com, marc.zyngier@....com, peterz@...radead.org,
        hch@....de, axboe@...nel.dk, tglx@...utronix.de
Subject: [tip:irq/core] PCI/vmd: Create named irq domain

Commit-ID:  ae904cafd59d7120ef2afb97b252eadeba45e95f
Gitweb:     http://git.kernel.org/tip/ae904cafd59d7120ef2afb97b252eadeba45e95f
Author:     Thomas Gleixner <tglx@...utronix.de>
AuthorDate: Tue, 20 Jun 2017 01:37:15 +0200
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Thu, 22 Jun 2017 18:21:12 +0200

PCI/vmd: Create named irq domain

Use the fwnode to create a named domain so diagnosis works.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: Jens Axboe <axboe@...nel.dk>
Cc: Marc Zyngier <marc.zyngier@....com>
Cc: Michael Ellerman <mpe@...erman.id.au>
Cc: Keith Busch <keith.busch@...el.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: linux-pci@...r.kernel.org
Cc: Bjorn Helgaas <bhelgaas@...gle.com>
Cc: Christoph Hellwig <hch@....de>
Link: http://lkml.kernel.org/r/20170619235444.379861978@linutronix.de

---
 drivers/pci/host/vmd.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/host/vmd.c b/drivers/pci/host/vmd.c
index e27ad2a..31203d6 100644
--- a/drivers/pci/host/vmd.c
+++ b/drivers/pci/host/vmd.c
@@ -554,6 +554,7 @@ static int vmd_find_free_domain(void)
 static int vmd_enable_domain(struct vmd_dev *vmd)
 {
 	struct pci_sysdata *sd = &vmd->sysdata;
+	struct fwnode_handle *fn;
 	struct resource *res;
 	u32 upper_bits;
 	unsigned long flags;
@@ -617,8 +618,13 @@ static int vmd_enable_domain(struct vmd_dev *vmd)
 
 	sd->node = pcibus_to_node(vmd->dev->bus);
 
-	vmd->irq_domain = pci_msi_create_irq_domain(NULL, &vmd_msi_domain_info,
+	fn = irq_domain_alloc_named_id_fwnode("VMD-MSI", vmd->sysdata.domain);
+	if (!fn)
+		return -ENODEV;
+
+	vmd->irq_domain = pci_msi_create_irq_domain(fn, &vmd_msi_domain_info,
 						    x86_vector_domain);
+	irq_domain_free_fwnode(fn);
 	if (!vmd->irq_domain)
 		return -ENODEV;