Messages in this thread Patch in this message | | | From | Matthew Garrett <> | Subject | [PATCH 3/4] x86: Use vga_default_device() when determining whether an fb is primary | Date | Fri, 23 Mar 2012 15:32:37 -0400 |
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IORESOURCE_ROM_SHADOW is not necessarily an indication that the hardware is the primary device. Add support for using the vgaarb functions and fall back if nothing's set them.
Signed-off-by: Matthew Garrett <mjg@redhat.com> Cc: mingo@redhat.com Cc: hpa@zytor.com --- arch/x86/video/fbdev.c | 20 +++++++++++++++----- 1 files changed, 15 insertions(+), 5 deletions(-)
diff --git a/arch/x86/video/fbdev.c b/arch/x86/video/fbdev.c index c5ffb6a..d5644bb 100644 --- a/arch/x86/video/fbdev.c +++ b/arch/x86/video/fbdev.c @@ -9,24 +9,34 @@ #include <linux/fb.h> #include <linux/pci.h> #include <linux/module.h> +#include <linux/vgaarb.h> int fb_is_primary_device(struct fb_info *info) { struct device *device = info->device; struct pci_dev *pci_dev = NULL; + struct pci_dev *default_device = vga_default_device(); struct resource *res = NULL; - int retval = 0; if (device) pci_dev = to_pci_dev(device); - if (pci_dev) - res = &pci_dev->resource[PCI_ROM_RESOURCE]; + if (!pci_dev) + return 0; + + if (default_device) { + if (pci_dev == default_device) + return 1; + else + return 0; + } + + res = &pci_dev->resource[PCI_ROM_RESOURCE]; if (res && res->flags & IORESOURCE_ROM_SHADOW) - retval = 1; + return 1; - return retval; + return 0; } EXPORT_SYMBOL(fb_is_primary_device); MODULE_LICENSE("GPL"); -- 1.7.7.6
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