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From:   Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
To:     wg@grandegger.com
Cc:     mkl@pengutronix.de, davem@davemloft.net, kuba@kernel.org,
        linux-can@vger.kernel.org, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org,
        Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Subject: [PATCH v2] can: softing: Remove redundant variable ptr
Date:   Tue, 27 Apr 2021 18:52:47 +0800
Message-Id: <1619520767-80948-1-git-send-email-jiapeng.chong@linux.alibaba.com>
Precedence: bulk

The value stored to ptr in the calculations this patch removes is not
used, so the calculation and the assignment can be removed.

Cleans up the following clang-analyzer warning:

drivers/net/can/softing/softing_main.c:279:3: warning: Value stored to
'ptr' is never read [clang-analyzer-deadcode.DeadStores].

drivers/net/can/softing/softing_main.c:242:3: warning: Value stored to
'ptr' is never read [clang-analyzer-deadcode.DeadStores].

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
---
Changes in v2:
  -Make the commit message more clearer.

 drivers/net/can/softing/softing_main.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/net/can/softing/softing_main.c b/drivers/net/can/softing/softing_main.c
index c44f341..cfc1325 100644
--- a/drivers/net/can/softing/softing_main.c
+++ b/drivers/net/can/softing/softing_main.c
@@ -239,7 +239,6 @@ static int softing_handle_1(struct softing *card)
 				DPRAM_INFO_BUSSTATE2 : DPRAM_INFO_BUSSTATE]);
 		/* timestamp */
 		tmp_u32 = le32_to_cpup((void *)ptr);
-		ptr += 4;
 		ktime = softing_raw2ktime(card, tmp_u32);
 
 		++netdev->stats.rx_errors;
@@ -276,7 +275,6 @@ static int softing_handle_1(struct softing *card)
 		ktime = softing_raw2ktime(card, tmp_u32);
 		if (!(msg.can_id & CAN_RTR_FLAG))
 			memcpy(&msg.data[0], ptr, 8);
-		ptr += 8;
 		/* update socket */
 		if (cmd & CMD_ACK) {
 			/* acknowledge, was tx msg */
-- 
1.8.3.1