Commit 8f789c48 authored by David S. Miller's avatar David S. Miller
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[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: default avatarDavid S. Miller <>
parent 988d0093
......@@ -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
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