net: ipa: pass mem_id to ipa_filter_reset_table()

Pass a memory region ID rather than the address of a memory region
descriptor to ipa_filter_reset_table(), to simplify callers.

We can eliminate the check for a zero region size in this function
because ipa_table_reset_add() checks that before adding anything to
the transaction.

Note that here and in subsequent commits there is no need to check
whether a memory region exists, because we will have already
verified that during initialization.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ipa/ipa_table.c

@@ -282,16 +282,14 @@ static void ipa_table_reset_add(struct gsi_trans *trans, bool filter,
  * for the IPv4 and IPv6 non-hashed and hashed filter tables.
  */
 static int
-ipa_filter_reset_table(struct ipa *ipa, const struct ipa_mem *mem, bool modem)
+ipa_filter_reset_table(struct ipa *ipa, enum ipa_mem_id mem_id, bool modem)
 {
+	const struct ipa_mem *mem = &ipa->mem[mem_id];
 	u32 ep_mask = ipa->filter_map;
 	u32 count = hweight32(ep_mask);
 	struct gsi_trans *trans;
 	enum gsi_ee_id ee_id;
 
-	if (!mem->size)
-		return 0;
-
 	trans = ipa_cmd_trans_alloc(ipa, count);
 	if (!trans) {
 		dev_err(&ipa->pdev->dev,
@@ -327,20 +325,18 @@ static int ipa_filter_reset(struct ipa *ipa, bool modem)
 {
 	int ret;
 
-	ret = ipa_filter_reset_table(ipa, &ipa->mem[IPA_MEM_V4_FILTER], modem);
+	ret = ipa_filter_reset_table(ipa, IPA_MEM_V4_FILTER, modem);
 	if (ret)
 		return ret;
 
-	ret = ipa_filter_reset_table(ipa, &ipa->mem[IPA_MEM_V4_FILTER_HASHED],
-				     modem);
+	ret = ipa_filter_reset_table(ipa, IPA_MEM_V4_FILTER_HASHED, modem);
 	if (ret)
 		return ret;
 
-	ret = ipa_filter_reset_table(ipa, &ipa->mem[IPA_MEM_V6_FILTER], modem);
+	ret = ipa_filter_reset_table(ipa, IPA_MEM_V6_FILTER, modem);
 	if (ret)
 		return ret;
-	ret = ipa_filter_reset_table(ipa, &ipa->mem[IPA_MEM_V6_FILTER_HASHED],
-				     modem);
+	ret = ipa_filter_reset_table(ipa, IPA_MEM_V6_FILTER_HASHED, modem);
 
 	return ret;
 }