vsprintf: add %pad extension for dma_addr_t use

dma_addr_t's can be either u32 or u64 depending on a CONFIG option.

There are a few hundred dma_addr_t's printed via either cast to unsigned
long long, unsigned long or no cast at all.

Add %pad to be able to emit them without the cast.

Update Documentation/printk-formats.txt too.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: "Shevchenko, Andriy" <andriy.shevchenko@intel.com>
Cc: Rob Landley <rob@landley.net>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 9 insertions, 2 deletions

diff --git a/Documentation/printk-formats.txt b/Documentation/printk-formats.txt
index 445ad743ec81..6f4eb322ffaf 100644
--- a/Documentation/printk-formats.txt
+++ b/Documentation/printk-formats.txt
@@ -55,14 +55,21 @@ 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.
 
-Physical addresses:
+Physical addresses types phys_addr_t:
 
-        %pa     0x01234567 or 0x0123456789abcdef
+        %pa[p]  0x01234567 or 0x0123456789abcdef
 
         For printing a phys_addr_t type (and its derivatives, such as
         resource_size_t) which can vary based on build options, regardless of
         the width of the CPU data path. Passed by reference.
 
+DMA addresses types dma_addr_t:
+
+        %pad    0x01234567 or 0x0123456789abcdef
+
+        For printing a dma_addr_t type which can vary based on build options,
+        regardless of the width of the CPU data path. Passed by reference.
+
 Raw buffer as a hex string:
         %*ph    00 01 02  ...  3f
         %*phC   00:01:02: ... :3f