linux-kernel - [PATCH][next] net: ipa: remove the redundant assignment to variable trans

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Date: Tue, 16 Jan 2024 11:40:25 +0000
From: Colin Ian King <colin.i.king@...il.com>
To: Alex Elder <elder@...nel.org>,
	"David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	netdev@...r.kernel.org
Cc: kernel-janitors@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH][next] net: ipa: remove the redundant assignment to variable trans_id

The variable trans_id is being modulo'd by channel->tre_count and
the value is being re-assigned back to trans_id even though the
variable is not used after this operation. The assignment is
redundant. Remove the assignment and just replace it with the modulo
operator.

Cleans up clang scan build warning:
warning: Although the value stored to 'trans_id' is used in the
enclosing expression, the value is never actually read from
'trans_id' [deadcode.DeadStores]

Signed-off-by: Colin Ian King <colin.i.king@...il.com>
---
 drivers/net/ipa/gsi_trans.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ipa/gsi_trans.c b/drivers/net/ipa/gsi_trans.c
index ee6fb00b71eb..f5dafc2f53ab 100644
--- a/drivers/net/ipa/gsi_trans.c
+++ b/drivers/net/ipa/gsi_trans.c
@@ -247,7 +247,7 @@ struct gsi_trans *gsi_channel_trans_complete(struct gsi_channel *channel)
 			return NULL;
 	}
 
-	return &trans_info->trans[trans_id %= channel->tre_count];
+	return &trans_info->trans[trans_id % channel->tre_count];
 }
 
 /* Move a transaction from allocated to committed state */
-- 
2.39.2