linux-kernel - [PATCH 07/11] drm: mgag200: remove redundant fbdev removal

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 23 Jan 2014 15:14:59 +0100
From:	David Herrmann <dh.herrmann@...il.com>
To:	dri-devel@...ts.freedesktop.org
Cc:	Ingo Molnar <mingo@...nel.org>, linux-fbdev@...r.kernel.org,
	Dave Airlie <airlied@...il.com>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Tomi Valkeinen <tomi.valkeinen@...com>,
	linux-kernel@...r.kernel.org, Tom Gundersen <teg@...m.no>,
	David Herrmann <dh.herrmann@...il.com>
Subject: [PATCH 07/11] drm: mgag200: remove redundant fbdev removal

We already call remove_conflicting_framebuffers() on PCI BAR0 during
pci-probe, no need to do that again during device loading.

This avoids calling into remove_conflicting_framebuffers() from within DRM
->load() callback, which might deadlock, once we make this call remove
DRM-backed sysfb-devices, too.

Signed-off-by: David Herrmann <dh.herrmann@...il.com>
---
 drivers/gpu/drm/mgag200/mgag200_main.c | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/drivers/gpu/drm/mgag200/mgag200_main.c b/drivers/gpu/drm/mgag200/mgag200_main.c
index 26868e5..0ee093c 100644
--- a/drivers/gpu/drm/mgag200/mgag200_main.c
+++ b/drivers/gpu/drm/mgag200/mgag200_main.c
@@ -117,20 +117,11 @@ static int mga_probe_vram(struct mga_device *mdev, void __iomem *mem)
 static int mga_vram_init(struct mga_device *mdev)
 {
 	void __iomem *mem;
-	struct apertures_struct *aper = alloc_apertures(1);
-	if (!aper)
-		return -ENOMEM;
 
 	/* BAR 0 is VRAM */
 	mdev->mc.vram_base = pci_resource_start(mdev->dev->pdev, 0);
 	mdev->mc.vram_window = pci_resource_len(mdev->dev->pdev, 0);
 
-	aper->ranges[0].base = mdev->mc.vram_base;
-	aper->ranges[0].size = mdev->mc.vram_window;
-
-	remove_conflicting_framebuffers(aper, "mgafb", true);
-	kfree(aper);
-
 	if (!devm_request_mem_region(mdev->dev->dev, mdev->mc.vram_base, mdev->mc.vram_window,
 				"mgadrmfb_vram")) {
 		DRM_ERROR("can't reserve VRAM\n");
-- 
1.8.5.3

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/