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PCI: Add include guard to include/linux/pci_ids.h 

Adding an include guard frees the preprocessor from reparsing over 2600
#defines in the cases where pci_ids.h is somehow included more than once.
This gives a tiny-but-measurable performance improvement when compiling
such files.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Rasmus Villemoes 2014-07-10 14:05:11 +02:00 committed by Bjorn Helgaas
parent 20cde69402
commit 8e2614bbf6
1 changed files with 4 additions and 0 deletions
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4
include/linux/pci_ids.h
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@ -6,6 +6,8 @@
* Do not add new entries to this file unless the definitions
* are shared between multiple drivers.
*/
#ifndef _LINUX_PCI_IDS_H
#define _LINUX_PCI_IDS_H
/* Device classes and subclasses */
@ -2968,3 +2970,5 @@
#define PCI_DEVICE_ID_XEN_PLATFORM 0x0001
#define PCI_VENDOR_ID_OCZ 0x1b85
#endif /* _LINUX_PCI_IDS_H */