[PATCH v2 02/14] crypto: omap-aes: Add useful debug macros

On Sat, 2013-08-17 at 21:42 -0500, Joel Fernandes wrote:

When DEBUG is enabled, these macros can be used to print variables in integer
and hex format, and clearly display which registers, offsets and values are
being read/written , including printing the names of the offsets and their values.

Note:
This patch results in a checkpatch error that cannot be fixed.
ERROR: Macros with multiple statements should be enclosed in a do - while loop
+#define omap_aes_read(dd, offset)                                      \
+       __raw_readl(dd->io_base + offset);                              \
+       pr_debug("omap_aes_read(" #offset ")\n");

Using do-while loop will break a lot of code such as:
ret = omap_aes_read(..);

That's where you use a statement expression macro

#define omap_aes_read(dd, offset)					\
({									\
	pr_debug("omap_aes_read("omap_aes_read(" #offset ")\n");	\
	__raw_readl((dd)->iobase + offset);				\
})