linux-kernel - [PATCH v8 09/13] lib/vsprintf: Add a note on re-using %pf or %pF

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Date:   Wed, 18 Sep 2019 17:33:26 +0300
From:   Sakari Ailus <sakari.ailus@...ux.intel.com>
To:     James Smart <james.smart@...adcom.com>,
        Dick Kennedy <dick.kennedy@...adcom.com>
Cc:     linux-scsi@...r.kernel.org, Joe Perches <joe@...ches.com>,
        Petr Mladek <pmladek@...e.com>, linux-kernel@...r.kernel.org,
        rafael@...nel.org,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Subject: [PATCH v8 09/13] lib/vsprintf: Add a note on re-using %pf or %pF

Add a note warning of re-use of obsolete %pf or %pF extensions.

Signed-off-by: Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc: Steven Rostedt <rostedt@...dmis.org>
Suggested-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
---
 lib/vsprintf.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index b00b57f9f911f..ef094e6124798 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -2008,6 +2008,8 @@ static char *kobject_string(char *buf, char *end, void *ptr,
  * - 'S' For symbolic direct pointers (or function descriptors) with offset
  * - 's' For symbolic direct pointers (or function descriptors) without offset
  * - '[Ss]R' as above with __builtin_extract_return_addr() translation
+ * - '[Ff]' Obsolete and now unsupported extension for printing direct pointers
+ *	    or function descriptors. Be careful when re-using %pf or %pF!
  * - 'B' For backtraced symbolic direct pointers with offset
  * - 'R' For decoded struct resource, e.g., [mem 0x0-0x1f 64bit pref]
  * - 'r' For raw struct resource, e.g., [mem 0x0-0x1f flags 0x201]
-- 
2.20.1