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vgaarb: Stub vga_set_legacy_decoding() 

vga_set_legacy_decoding() is defined in drivers/gpu/vga/vgaarb.c,
which is only compiled with CONFIG_VGA_ARB.  A caller would
therefore get an undefined symbol if the VGA arbiter is not
enabled.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Williamson 2015-04-07 11:14:38 -06:00
parent 71be3423a6
commit 0ea18b40cd
1 changed files with 5 additions and 0 deletions
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5
include/linux/vgaarb.h
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@ -65,8 +65,13 @@ struct pci_dev;
* out of the arbitration process (and can be safe to take * out of the arbitration process (and can be safe to take
* interrupts at any time. * interrupts at any time.
*/ */
#if defined(CONFIG_VGA_ARB)
extern void vga_set_legacy_decoding(struct pci_dev *pdev, extern void vga_set_legacy_decoding(struct pci_dev *pdev,
unsigned int decodes); unsigned int decodes);
#else
static inline void vga_set_legacy_decoding(struct pci_dev *pdev,
unsigned int decodes) { };
#endif
/** /**
* vga_get - acquire & locks VGA resources * vga_get - acquire & locks VGA resources