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authorAndrei Emeltchenko <andrei.emeltchenko@intel.com>2012-07-30 14:40:23 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-30 17:25:14 -0700
commit76597ff989a1fbaa9b9a1e54007cd759bf257ab7 (patch)
tree51c5a7e99de7ff2ba88ba73b110a60c623c5d32c /Documentation/printk-formats.txt
parent61e99ab8e35a88b8c4d0f80d3df9ee16df471be5 (diff)
downloadkernel-76597ff989a1fbaa9b9a1e54007cd759bf257ab7.tar.gz
vsprintf: add %pMR for Bluetooth MAC address
Bluetooth uses mostly LE byte order which is reversed for visual interpretation. Currently in Bluetooth in use unsafe batostr function. This is a slightly modified version of Joe's patch (sent Sat, Dec 4, 2010). Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Cc: Joe Perches <joe@perches.com> Cc: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/printk-formats.txt')
-rw-r--r--Documentation/printk-formats.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/printk-formats.txt b/Documentation/printk-formats.txt
index 5df176ed59b8..d8d168fa79d6 100644
--- a/Documentation/printk-formats.txt
+++ b/Documentation/printk-formats.txt
@@ -56,6 +56,7 @@ Struct Resources:
MAC/FDDI addresses:
%pM 00:01:02:03:04:05
+ %pMR 05:04:03:02:01:00
%pMF 00-01-02-03-04-05
%pm 000102030405
@@ -67,6 +68,10 @@ MAC/FDDI addresses:
the 'M' specifier to use dash ('-') separators instead of the default
separator.
+ For Bluetooth addresses the 'R' specifier shall be used after the 'M'
+ specifier to use reversed byte order suitable for visual interpretation
+ of Bluetooth addresses which are in the little endian order.
+
IPv4 addresses:
%pI4 1.2.3.4