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From: Thomas Zimmermann <tzimmermann@suse.de>
To: javierm@redhat.com, daniel.vetter@ffwll.ch, patrik.r.jakobsson@gmail.com
Cc: dri-devel@lists.freedesktop.org,
	Thomas Zimmermann <tzimmermann@suse.de>,
	Helge Deller <deller@gmx.de>,
	linux-fbdev@vger.kernel.org
Subject: [PATCH v4 4/9] video/aperture: Only kick vgacon when the pdev is decoding vga
Date: Thu,  6 Apr 2023 10:32:35 +0200	[thread overview]
Message-ID: <20230406083240.14031-5-tzimmermann@suse.de> (raw)
In-Reply-To: <20230406083240.14031-1-tzimmermann@suse.de>

From: Daniel Vetter <daniel.vetter@ffwll.ch>

Otherwise it's a bit silly, and we might throw out the driver for the
screen the user is actually looking at. I haven't found a bug report
for this case yet, but we did get bug reports for the analog case
where we're throwing out the efifb driver.

v2: Flip the check around to make it clear it's a special case for
kicking out the vgacon driver only (Thomas)

v4:
- fixes to commit message
- fix Daniel's S-o-b address

Link: https://bugzilla.kernel.org/show_bug.cgi?id=216303
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Helge Deller <deller@gmx.de>
Cc: linux-fbdev@vger.kernel.org
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
---
 drivers/video/aperture.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/video/aperture.c b/drivers/video/aperture.c
index d0eccc4ed60b..26bdba6b2725 100644
--- a/drivers/video/aperture.c
+++ b/drivers/video/aperture.c
@@ -342,13 +342,15 @@ int aperture_remove_conflicting_pci_devices(struct pci_dev *pdev, const char *na
 			return ret;
 	}
 
-	/*
-	 * WARNING: Apparently we must kick fbdev drivers before vgacon,
-	 * otherwise the vga fbdev driver falls over.
-	 */
-	ret = vga_remove_vgacon(pdev);
-	if (ret)
-		return ret;
+	if (primary) {
+		/*
+		 * WARNING: Apparently we must kick fbdev drivers before vgacon,
+		 * otherwise the vga fbdev driver falls over.
+		 */
+		ret = vga_remove_vgacon(pdev);
+		if (ret)
+			return ret;
+	}
 
 	return 0;
 
-- 
2.40.0


WARNING: multiple messages have this Message-ID (diff)
From: Thomas Zimmermann <tzimmermann@suse.de>
To: javierm@redhat.com, daniel.vetter@ffwll.ch, patrik.r.jakobsson@gmail.com
Cc: Helge Deller <deller@gmx.de>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org
Subject: [PATCH v4 4/9] video/aperture: Only kick vgacon when the pdev is decoding vga
Date: Thu,  6 Apr 2023 10:32:35 +0200	[thread overview]
Message-ID: <20230406083240.14031-5-tzimmermann@suse.de> (raw)
In-Reply-To: <20230406083240.14031-1-tzimmermann@suse.de>

From: Daniel Vetter <daniel.vetter@ffwll.ch>

Otherwise it's a bit silly, and we might throw out the driver for the
screen the user is actually looking at. I haven't found a bug report
for this case yet, but we did get bug reports for the analog case
where we're throwing out the efifb driver.

v2: Flip the check around to make it clear it's a special case for
kicking out the vgacon driver only (Thomas)

v4:
- fixes to commit message
- fix Daniel's S-o-b address

Link: https://bugzilla.kernel.org/show_bug.cgi?id=216303
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Helge Deller <deller@gmx.de>
Cc: linux-fbdev@vger.kernel.org
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
---
 drivers/video/aperture.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/video/aperture.c b/drivers/video/aperture.c
index d0eccc4ed60b..26bdba6b2725 100644
--- a/drivers/video/aperture.c
+++ b/drivers/video/aperture.c
@@ -342,13 +342,15 @@ int aperture_remove_conflicting_pci_devices(struct pci_dev *pdev, const char *na
 			return ret;
 	}
 
-	/*
-	 * WARNING: Apparently we must kick fbdev drivers before vgacon,
-	 * otherwise the vga fbdev driver falls over.
-	 */
-	ret = vga_remove_vgacon(pdev);
-	if (ret)
-		return ret;
+	if (primary) {
+		/*
+		 * WARNING: Apparently we must kick fbdev drivers before vgacon,
+		 * otherwise the vga fbdev driver falls over.
+		 */
+		ret = vga_remove_vgacon(pdev);
+		if (ret)
+			return ret;
+	}
 
 	return 0;
 
-- 
2.40.0


  parent reply	other threads:[~2023-04-06  8:32 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-06  8:32 [PATCH v4 0/9] video/aperture: Ignore firmware framebuffers with non-primary devices Thomas Zimmermann
2023-04-06  8:32 ` [PATCH v4 1/9] drm/gma500: Use drm_aperture_remove_conflicting_pci_framebuffers Thomas Zimmermann
2023-04-06  8:41   ` Javier Martinez Canillas
2023-04-06  8:53     ` Thomas Zimmermann
2023-04-06  9:01       ` Javier Martinez Canillas
2023-04-06  8:32 ` [PATCH v4 2/9] video/aperture: use generic code to figure out the vga default device Thomas Zimmermann
2023-04-06  8:32   ` Thomas Zimmermann
2023-04-06  8:32 ` [PATCH v4 3/9] drm/aperture: Remove primary argument Thomas Zimmermann
2023-04-06  8:32   ` Thomas Zimmermann
2023-04-06  8:32   ` Thomas Zimmermann
2023-04-06  8:32   ` Thomas Zimmermann
2023-04-06  8:32 ` Thomas Zimmermann [this message]
2023-04-06  8:32   ` [PATCH v4 4/9] video/aperture: Only kick vgacon when the pdev is decoding vga Thomas Zimmermann
2023-04-06  8:32 ` [PATCH v4 5/9] video/aperture: Move vga handling to pci function Thomas Zimmermann
2023-04-06  8:32   ` Thomas Zimmermann
2023-04-06  8:32 ` [PATCH v4 6/9] video/aperture: Drop primary argument Thomas Zimmermann
2023-04-06  8:32   ` Thomas Zimmermann
2023-04-06  8:32 ` [PATCH v4 7/9] video/aperture: Only remove sysfb on the default vga pci device Thomas Zimmermann
2023-04-06  8:32   ` Thomas Zimmermann
2023-04-06  8:32 ` [PATCH v4 8/9] fbdev: Simplify fb_is_primary_device for x86 Thomas Zimmermann
2023-04-06  8:32 ` [PATCH v4 9/9] video/aperture: Provide a VGA helper for gma500 and internal use Thomas Zimmermann
2023-04-06  8:40   ` Daniel Vetter

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