net: ipa: get rid of ipa_cmd_info->direction

The direction field of the ipa_cmd_info structure is set, but never
used.  It seems it might have been used for the DMA_SHARED_MEM
immediate command, but the DIRECTION flag is set based on the value
of the passed-in direction flag there.

Anyway, remove this unused field from the ipa_cmd_info structure.
This is done as a separate patch to make it very obvious that it's
not required.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ipa/gsi_trans.c

@@ -413,7 +413,6 @@ void gsi_trans_cmd_add(struct gsi_trans *trans, void *buf, u32 size,
 		       dma_addr_t addr, enum dma_data_direction direction,
 		       enum ipa_cmd_opcode opcode)
 {
-	struct ipa_cmd_info *info;
 	u32 which = trans->used++;
 	struct scatterlist *sg;
 
@@ -438,9 +437,7 @@ void gsi_trans_cmd_add(struct gsi_trans *trans, void *buf, u32 size,
 	sg_dma_address(sg) = addr;
 	sg_dma_len(sg) = size;
 
-	info = &trans->info[which];
-	info->opcode = opcode;
-	info->direction = direction;
+	trans->info[which].opcode = opcode;
 }
 
 /* Add a page transfer to a transaction.  It will fill the only TRE. */

drivers/net/ipa/ipa_cmd.h

@@ -50,11 +50,9 @@ enum ipa_cmd_opcode {
  * struct ipa_cmd_info - information needed for an IPA immediate command
  *
  * @opcode:	The command opcode.
- * @direction:	Direction of data transfer for DMA commands
  */
 struct ipa_cmd_info {
 	enum ipa_cmd_opcode opcode;
-	enum dma_data_direction direction;
 };
 
 /**