linux-kernel - [PATCH net-next 5/8] net: ipa: get rid of ipa_cmd

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Message-Id: <20220520185533.877920-6-elder@linaro.org>
Date:   Fri, 20 May 2022 13:55:30 -0500
From:   Alex Elder <elder@...aro.org>
To:     davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com
Cc:     mka@...omium.org, evgreen@...omium.org, bjorn.andersson@...aro.org,
        quic_cpratapa@...cinc.com, quic_avuyyuru@...cinc.com,
        quic_jponduru@...cinc.com, quic_subashab@...cinc.com,
        elder@...nel.org, netdev@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH net-next 5/8] 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@...aro.org>
---
 drivers/net/ipa/gsi_trans.c | 5 +----
 drivers/net/ipa/ipa_cmd.h   | 2 --
 2 files changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/net/ipa/gsi_trans.c b/drivers/net/ipa/gsi_trans.c
index bf31ef3d56adc..cf8ee42373547 100644
--- a/drivers/net/ipa/gsi_trans.c
+++ b/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. */
diff --git a/drivers/net/ipa/ipa_cmd.h b/drivers/net/ipa/ipa_cmd.h
index 05ed7e42e1842..d4dbe2ce96dcd 100644
--- a/drivers/net/ipa/ipa_cmd.h
+++ b/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;
 };
 
 /**
-- 
2.32.0