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hyperv-fb: kick off efifb early

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Remove firmware framebuffer before initializing hyperv-fb.  Needed
on gen2 virtual machines.   Letting register_framebuffer handle the
switchover results in efifb still being active while hyperv graphics
are initialized, which in turn can make the linux kernel hang.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gerd Hoffmann 2014-02-26 11:51:25 +01:00 committed by Greg Kroah-Hartman
parent 9069fd5496
commit e5bb7425e5
1 changed files with 2 additions and 0 deletions
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2
drivers/video/hyperv_fb.c
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@ -679,6 +679,8 @@ static int hvfb_getmem(struct fb_info *info)
if (gen2vm) {
info->apertures->ranges[0].base = screen_info.lfb_base;
info->apertures->ranges[0].size = screen_info.lfb_size;
remove_conflicting_framebuffers(info->apertures,
KBUILD_MODNAME, false);
} else {
info->apertures->ranges[0].base = pci_resource_start(pdev, 0);
info->apertures->ranges[0].size = pci_resource_len(pdev, 0);