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authorMatthew Garrett <mjg@redhat.com>2012-04-16 16:26:02 -0400
committerDave Airlie <airlied@redhat.com>2012-04-24 09:50:15 +0100
commit1a39b310e920bb7098067d96411b31e459ae8f32 (patch)
tree90f45eed83bcd5308ac9ad850844d0b57038e5f8 /drivers/gpu/vga/vgaarb.c
parentf122c6109b1a79153cfb1e188c665ce3f312a886 (diff)
vgaarb: Add support for setting the default video device (v2)
The default VGA device is a somewhat fluid concept on platforms with multiple GPUs. Add support for setting it so switching code can update things appropriately, and make sure that the sysfs code returns the right device if it's changed. v2: Updated to fix builds when __ARCH_HAS_VGA_DEFAULT_DEVICE is false. Signed-off-by: Matthew Garrett <mjg@redhat.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Acked-by: benh@kernel.crashing.org Cc: airlied@redhat.com Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/vga/vgaarb.c')
-rw-r--r--drivers/gpu/vga/vgaarb.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/vga/vgaarb.c b/drivers/gpu/vga/vgaarb.c
index 111d956d8e7d..e223b96fa6a0 100644
--- a/drivers/gpu/vga/vgaarb.c
+++ b/drivers/gpu/vga/vgaarb.c
@@ -136,6 +136,11 @@ struct pci_dev *vga_default_device(void)
{
return vga_default;
}
+
+void vga_set_default_device(struct pci_dev *pdev)
+{
+ vga_default = pdev;
+}
#endif
static inline void vga_irq_set_state(struct vga_device *vgadev, bool state)
@@ -605,10 +610,12 @@ static bool vga_arbiter_del_pci_device(struct pci_dev *pdev)
goto bail;
}
+#ifndef __ARCH_HAS_VGA_DEFAULT_DEVICE
if (vga_default == pdev) {
pci_dev_put(vga_default);
vga_default = NULL;
}
+#endif
if (vgadev->decodes & (VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM))
vga_decode_count--;

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