linux-kernel - [PATCH 09/11] video/aperture: Move vga handling to pci function

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Message-Id: <20230111154112.90575-9-daniel.vetter@ffwll.ch>
Date:   Wed, 11 Jan 2023 16:41:10 +0100
From:   Daniel Vetter <daniel.vetter@...ll.ch>
To:     DRI Development <dri-devel@...ts.freedesktop.org>
Cc:     Intel Graphics Development <intel-gfx@...ts.freedesktop.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Daniel Vetter <daniel.vetter@...el.com>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Javier Martinez Canillas <javierm@...hat.com>,
        Helge Deller <deller@....de>, linux-fbdev@...r.kernel.org
Subject: [PATCH 09/11] video/aperture: Move vga handling to pci function

A few reasons for this:

- It's really the only one where this matters. I tried looking around,
  and I didn't find any non-pci vga-compatible controllers for x86
  (since that's the only platform where we had this until a few
  patches ago), where a driver participating in the aperture claim
  dance would interfere.

- I also don't expect that any future bus anytime soon will
  not just look like pci towards the OS, that's been the case for like
  25+ years by now for practically everything (even non non-x86).

- Also it's a bit funny if we have one part of the vga removal in the
  pci function, and the other in the generic one.

Signed-off-by: Daniel Vetter <daniel.vetter@...el.com>
Cc: Thomas Zimmermann <tzimmermann@...e.de>
Cc: Javier Martinez Canillas <javierm@...hat.com>
Cc: Helge Deller <deller@....de>
Cc: linux-fbdev@...r.kernel.org
---
 drivers/video/aperture.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/drivers/video/aperture.c b/drivers/video/aperture.c
index 6f351a58f6c6..03f8a5e95238 100644
--- a/drivers/video/aperture.c
+++ b/drivers/video/aperture.c
@@ -298,14 +298,6 @@ int aperture_remove_conflicting_devices(resource_size_t base, resource_size_t si
 
 	aperture_detach_devices(base, size);
 
-	/*
-	 * If this is the primary adapter, there could be a VGA device
-	 * that consumes the VGA framebuffer I/O range. Remove this device
-	 * as well.
-	 */
-	if (primary)
-		aperture_detach_devices(VGA_FB_PHYS_BASE, VGA_FB_PHYS_SIZE);
-
 	return 0;
 }
 EXPORT_SYMBOL(aperture_remove_conflicting_devices);
@@ -344,6 +336,13 @@ int aperture_remove_conflicting_pci_devices(struct pci_dev *pdev, const char *na
 	if (!primary)
 		return 0;
 
+	/*
+	 * If this is the primary adapter, there could be a VGA device
+	 * that consumes the VGA framebuffer I/O range. Remove this device
+	 * as well.
+	 */
+	aperture_detach_devices(VGA_FB_PHYS_BASE, VGA_FB_PHYS_SIZE);
+
 	/*
 	 * WARNING: Apparently we must kick fbdev drivers before vgacon,
 	 * otherwise the vga fbdev driver falls over.
-- 
2.39.0