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[62.195.130.160]) by smtp.googlemail.com with ESMTPSA id b5-20020a17090630c500b006e8044fa76bsm8827900ejb.143.2022.04.12.05.16.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Apr 2022 05:16:33 -0700 (PDT) From: Jakob Koschel To: "David S. Miller" Subject: [PATCH net-next v3 08/18] net: sparx5: Replace usage of found with dedicated list iterator variable Date: Tue, 12 Apr 2022 14:15:47 +0200 Message-Id: <20220412121557.3553555-9-jakobkoschel@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220412121557.3553555-1-jakobkoschel@gmail.com> References: <20220412121557.3553555-1-jakobkoschel@gmail.com> MIME-Version: 1.0 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Andrew Lunn , Song Liu , Alexei Starovoitov , Eric Dumazet , Paul Mackerras , Ariel Elior , Florian Fainelli , Daniel Borkmann , Steen Hegelund , John Fastabend , Andrii Nakryiko , "Bos, H.J." , Jason Gunthorpe , linux-arm-kernel@lists.infradead.org, Martin Habets , Paolo Abeni , Vivien Didelot , Bjarni Jonasson , Jiri Pirko , Arnd Bergmann , Brian Johannesmeyer , KP Singh , Christophe JAILLET , Jakob Koschel , Jakub Kicinski , Di Zhu , Lars Povlsen , Colin Ian King , Manish Chopra , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, UNGLinuxDriver@microchip.com, Yonghong Song , Edward Cree , Michael Walle , Casper Andersson , Xu Wang , Cristiano Giuffrida , bpf@vger.kernel.org, Vladimir Oltean , linuxppc-dev@lists.ozlabs.org, Martin KaFai Lau , Mike Rapoport Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" To move the list iterator variable into the list_for_each_entry_*() macro in the future it should be avoided to use the list iterator variable after the loop body. To *never* use the list iterator variable after the loop it was concluded to use a separate iterator variable instead of a found boolean [1]. This removes the need to use a found variable and simply checking if the variable was set, can determine if the break/goto was hit. Link: https://lore.kernel.org/all/CAHk-=wgRr_D8CB-D9Kg-c=EHreAsk5SqXPwr9Y7k9sA6cWXJ6w@mail.gmail.com/ [1] Signed-off-by: Jakob Koschel --- .../microchip/sparx5/sparx5_mactable.c | 25 +++++++++---------- 1 file changed, 12 insertions(+), 13 deletions(-) diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_mactable.c b/drivers/net/ethernet/microchip/sparx5/sparx5_mactable.c index a5837dbe0c7e..bb8d9ce79ac2 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_mactable.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_mactable.c @@ -362,8 +362,7 @@ static void sparx5_mact_handle_entry(struct sparx5 *sparx5, unsigned char mac[ETH_ALEN], u16 vid, u32 cfg2) { - struct sparx5_mact_entry *mact_entry; - bool found = false; + struct sparx5_mact_entry *mact_entry = NULL, *iter; u16 port; if (LRN_MAC_ACCESS_CFG_2_MAC_ENTRY_ADDR_TYPE_GET(cfg2) != @@ -378,28 +377,28 @@ static void sparx5_mact_handle_entry(struct sparx5 *sparx5, return; mutex_lock(&sparx5->mact_lock); - list_for_each_entry(mact_entry, &sparx5->mact_entries, list) { - if (mact_entry->vid == vid && - ether_addr_equal(mac, mact_entry->mac)) { - found = true; - mact_entry->flags |= MAC_ENT_ALIVE; - if (mact_entry->port != port) { + list_for_each_entry(iter, &sparx5->mact_entries, list) { + if (iter->vid == vid && + ether_addr_equal(mac, iter->mac)) { + iter->flags |= MAC_ENT_ALIVE; + if (iter->port != port) { dev_warn(sparx5->dev, "Entry move: %d -> %d\n", - mact_entry->port, port); - mact_entry->port = port; - mact_entry->flags |= MAC_ENT_MOVED; + iter->port, port); + iter->port = port; + iter->flags |= MAC_ENT_MOVED; } /* Entry handled */ + mact_entry = iter; break; } } mutex_unlock(&sparx5->mact_lock); - if (found && !(mact_entry->flags & MAC_ENT_MOVED)) + if (mact_entry && !(mact_entry->flags & MAC_ENT_MOVED)) /* Present, not moved */ return; - if (!found) { + if (!mact_entry) { /* Entry not found - now add */ mact_entry = alloc_mact_entry(sparx5, mac, vid, port); if (!mact_entry)