target: Add control CDB READ payload zero work-around

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / Documentation / printk-formats.txt

diff --git a/Documentation/printk-formats.txt b/Documentation/printk-formats.txt
index 5df176ed59b826e8cbeaca7c96d6ed6d06759fa8..7561d7ed8e11ef25a9a1fb479492148b6f038d5d 100644 (file)
--- a/Documentation/printk-formats.txt
+++ b/Documentation/printk-formats.txt
@@ -53,9 +53,20 @@ Struct Resources:
        For printing struct resources. The 'R' and 'r' specifiers result in a
        printed resource with ('R') or without ('r') a decoded flags member.
 
+Raw buffer as a hex string:
+       %*ph    00 01 02  ...  3f
+       %*phC   00:01:02: ... :3f
+       %*phD   00-01-02- ... -3f
+       %*phN   000102 ... 3f
+
+       For printing a small buffers (up to 64 bytes long) as a hex string with
+       certain separator. For the larger buffers consider to use
+       print_hex_dump().
+
 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 +78,10 @@ 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