Re: [PATCH 01/11] OMAP: DMA: Introduce DMA device attributes

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On 7/30/2010 5:57 AM, G, Manjunath Kondaiah wrote:

<snip>

+/* Attributes for OMAP DMA Contrllers */
+#define ENABLE_1510_MODE		(1<<   0)
+#define DMA_LINKED_LCH			(1<<   1)
+#define GLOBAL_PRIORITY			(1<<   2)
+#define RESERVE_CHANNEL			(1<<   3)
+#define SRC_PORT			(2<<   3)
+#define DST_PORT			(2<<   4)
+#define IS_CSSA_32			(2<<   5)
+#define IS_CDSA_32			(2<<   6)
+#define SRC_INDEX			(4<<   6)
+#define DST_INDEX			(4<<   7)
+#define IS_BURST_ONLY4			(4<<   8)
+#define CLEAR_CSR_ON_READ		(4<<   9)
+#define IS_WORD_16			(8<<   9)
+#define IS_RW_PRIORIY			(8<<   0xA)

It is a minor detail, but why are you shifting both side of the
operator? It is really confusing, cannot you just do 1<<  X?
With 0<  X<  13.
I can change this if it is confusing to others.

So you are still convince that this is a good way to do it???
What is the rational behind that?
Why adding potential source of confusion when you can avoid that easily?

Regards,
Benoit
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