From patchwork Tue Oct 17 11:34:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshihiro Shimoda X-Patchwork-Id: 13425050 X-Patchwork-Delegate: kuba@kernel.org Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9817541AAB for ; Tue, 17 Oct 2023 11:34:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=none Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 37D48B0; Tue, 17 Oct 2023 04:34:05 -0700 (PDT) X-IronPort-AV: E=Sophos;i="6.03,231,1694703600"; d="scan'208";a="183380335" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie6.idc.renesas.com with ESMTP; 17 Oct 2023 20:34:04 +0900 Received: from localhost.localdomain (unknown [10.166.15.32]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 278164003EA8; Tue, 17 Oct 2023 20:34:04 +0900 (JST) From: Yoshihiro Shimoda To: s.shtylyov@omp.ru, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Yoshihiro Shimoda Subject: [PATCH net-next v3 1/2] rswitch: Use unsigned int for port related array index Date: Tue, 17 Oct 2023 20:34:01 +0900 Message-Id: <20231017113402.849735-2-yoshihiro.shimoda.uh@renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231017113402.849735-1-yoshihiro.shimoda.uh@renesas.com> References: <20231017113402.849735-1-yoshihiro.shimoda.uh@renesas.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@kernel.org Array index should not be negative, so modify the condition of rswitch_for_each_enabled_port_continue_reverse() macro, and then use unsigned int instead. Signed-off-by: Yoshihiro Shimoda Reviewed-by: Simon Horman --- drivers/net/ethernet/renesas/rswitch.c | 10 ++++++---- drivers/net/ethernet/renesas/rswitch.h | 2 +- 2 files changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/renesas/rswitch.c b/drivers/net/ethernet/renesas/rswitch.c index 112e605f104a..e5a41e7880d8 100644 --- a/drivers/net/ethernet/renesas/rswitch.c +++ b/drivers/net/ethernet/renesas/rswitch.c @@ -1405,7 +1405,8 @@ static void rswitch_ether_port_deinit_one(struct rswitch_device *rdev) static int rswitch_ether_port_init_all(struct rswitch_private *priv) { - int i, err; + unsigned int i; + int err; rswitch_for_each_enabled_port(priv, i) { err = rswitch_ether_port_init_one(priv->rdev[i]); @@ -1786,7 +1787,8 @@ static void rswitch_device_free(struct rswitch_private *priv, int index) static int rswitch_init(struct rswitch_private *priv) { - int i, err; + unsigned int i; + int err; for (i = 0; i < RSWITCH_NUM_PORTS; i++) rswitch_etha_init(priv, i); @@ -1816,7 +1818,7 @@ static int rswitch_init(struct rswitch_private *priv) for (i = 0; i < RSWITCH_NUM_PORTS; i++) { err = rswitch_device_alloc(priv, i); if (err < 0) { - for (i--; i >= 0; i--) + for (; i-- > 0; ) rswitch_device_free(priv, i); goto err_device_alloc; } @@ -1959,7 +1961,7 @@ static int renesas_eth_sw_probe(struct platform_device *pdev) static void rswitch_deinit(struct rswitch_private *priv) { - int i; + unsigned int i; rswitch_gwca_hw_deinit(priv); rcar_gen4_ptp_unregister(priv->ptp_priv); diff --git a/drivers/net/ethernet/renesas/rswitch.h b/drivers/net/ethernet/renesas/rswitch.h index 04f49a7a5843..27c9d3872c0e 100644 --- a/drivers/net/ethernet/renesas/rswitch.h +++ b/drivers/net/ethernet/renesas/rswitch.h @@ -20,7 +20,7 @@ else #define rswitch_for_each_enabled_port_continue_reverse(priv, i) \ - for (i--; i >= 0; i--) \ + for (; i-- > 0; ) \ if (priv->rdev[i]->disabled) \ continue; \ else