[NET]: Elminate spurious print_mac() calls.



Patrick McHardy notes that print_mac() can get invoked
even if the result it unused (f.e. as an argument to
pr_debug() when DEBUG is not defined).

Mark this function as "__pure" to eliminate this problem.

Signed-off-by: David S. Miller <davem@davemloft.net>

parent 988d0093

include/linux/if_ether.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -129,7 +129,7 @@ extern ssize_t sysfs_format_mac(char buf, const unsigned char addr, int len);
		/*
		* Display a 6 byte device address (MAC) in a readable format.
		*/
		extern char print_mac(char buf, const unsigned char *addr);
		extern __pure char print_mac(char buf, const unsigned char *addr);
		#define MAC_BUF_SIZE 18
		#define DECLARE_MAC_BUF(var) char var[MAC_BUF_SIZE] __maybe_unused