vgaarb: move the kerneldoc for vga_set_legacy_decoding to vgaarb.c

Kerneldoc comments should be at the implementation side, not in the
header just declaring the prototype.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210716061634.2446357-4-hch@lst.deAcked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>

drivers/gpu/vga/vgaarb.c

@@ -834,6 +834,17 @@ static void __vga_set_legacy_decoding(struct pci_dev *pdev,
 	spin_unlock_irqrestore(&vga_lock, flags);
 }
 
+/**
+ * vga_set_legacy_decoding
+ * @pdev: pci device of the VGA card
+ * @decodes: bit mask of what legacy regions the card decodes
+ *
+ * Indicates to the arbiter if the card decodes legacy VGA IOs, legacy VGA
+ * Memory, both, or none. All cards default to both, the card driver (fbdev for
+ * example) should tell the arbiter if it has disabled legacy decoding, so the
+ * card can be left out of the arbitration process (and can be safe to take
+ * interrupts at any time.
+ */
 void vga_set_legacy_decoding(struct pci_dev *pdev, unsigned int decodes)
 {
 	__vga_set_legacy_decoding(pdev, decodes, false);

include/linux/vgaarb.h

@@ -46,19 +46,6 @@ struct pci_dev;
 
 /* For use by clients */
 
-/**
- *     vga_set_legacy_decoding
- *
- *     @pdev: pci device of the VGA card
- *     @decodes: bit mask of what legacy regions the card decodes
- *
- *     Indicates to the arbiter if the card decodes legacy VGA IOs,
- *     legacy VGA Memory, both, or none. All cards default to both,
- *     the card driver (fbdev for example) should tell the arbiter
- *     if it has disabled legacy decoding, so the card can be left
- *     out of the arbitration process (and can be safe to take
- *     interrupts at any time.
- */
 #if defined(CONFIG_VGA_ARB)
 extern void vga_set_legacy_decoding(struct pci_dev *pdev,
 				    unsigned int decodes);