linux-kernel - [PATCH V3 09/29] drm/i915: deprecate pci_get_bus_and

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Message-Id: <1511801886-6753-10-git-send-email-okaya@codeaurora.org>
Date:   Mon, 27 Nov 2017 11:57:46 -0500
From:   Sinan Kaya <okaya@...eaurora.org>
To:     linux-pci@...r.kernel.org, timur@...eaurora.org
Cc:     linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        intel-gfx@...ts.freedesktop.org, Sinan Kaya <okaya@...eaurora.org>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        David Airlie <airlied@...ux.ie>,
        dri-devel@...ts.freedesktop.org (open list:DRM DRIVERS),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH V3 09/29] drm/i915: deprecate pci_get_bus_and_slot()

pci_get_bus_and_slot() is restrictive such that it assumes domain=0 as
where a PCI device is present. This restricts the device drivers to be
reused for other domain numbers.

Getting ready to remove pci_get_bus_and_slot() function in favor of
pci_get_domain_bus_and_slot().

Extract the domain number from drm_device and pass it into
pci_get_domain_bus_and_slot() function.

Signed-off-by: Sinan Kaya <okaya@...eaurora.org>
---
 drivers/gpu/drm/i915/i915_drv.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 9f45cfe..5a8cb79 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -419,7 +419,10 @@ static int i915_getparam(struct drm_device *dev, void *data,
 
 static int i915_get_bridge_dev(struct drm_i915_private *dev_priv)
 {
-	dev_priv->bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
+	int domain = pci_domain_nr(dev_priv->drm.pdev->bus);
+
+	dev_priv->bridge_dev =
+		pci_get_domain_bus_and_slot(domain, 0, PCI_DEVFN(0, 0));
 	if (!dev_priv->bridge_dev) {
 		DRM_ERROR("bridge device not found\n");
 		return -1;
-- 
1.9.1