From patchwork Tue Mar 7 20:22:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Dooley X-Patchwork-Id: 13164685 X-Patchwork-Delegate: mail@conchuod.ie Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A65F3C742A7 for ; Tue, 7 Mar 2023 20:23:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=x1t7rKv4asGKQzlGZEDVXAMFHIm1E+xY+LnB2LcplqM=; b=sPbCqlVrvsG3AS LA83sMkoNcAmisn7zDWbi8bxA0/wXhpiAFoJHnpfMMSGoEloyfqhqMTgKlb07QjeIGjVGLSY7koKo /q6GCoJZEoXnEgb6q53EIcnPGb9H3mCul58efkjXf3FrwgWPCZImXjjFKw/AfYJtUc9YmZUHtUcay +gTJ9B2OWPBLWwjC7RuDRuYX3i8H8X96619aFxGySfkPQWa4kcBu4BtOCfJAupsxZdnBFPdbSTKTb 5o9YqydX20BK1/oXpcPQTj4GADt/90hZWlmj2MdMgr59TSXfxrLoEovrVSid2yAq5y/22Z+Bux3pA 2ow+pgcKi9GshfkDJUCw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pZdqP-002MOF-UH; Tue, 07 Mar 2023 20:23:33 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pZdqM-002MMe-G5 for linux-riscv@lists.infradead.org; Tue, 07 Mar 2023 20:23:31 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id D594B61522; Tue, 7 Mar 2023 20:23:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E8914C433EF; Tue, 7 Mar 2023 20:23:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1678220609; bh=VALLXa4RfjgD9/IaizhQxdY6y9Xca49NdnfoOQ47Y+Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nBr9Ztu2PNBF/a1Vij6drPfXyPlA06m7KIJsTbnWXbmOq+UrBScPikzMRIZw3qhfp AQ7rSrhZ1Q8/8FoV0Sw18GSufFJrL0ZKlGVCOQTaOvMwnqqMlvxGfqMyZCcvDQvWWZ YxG9Sp7BixBDAh7MKV8wKP2JNLlxaka50790bIIzqHd9ADjfyC64PUaMtDqnDDMxRq 8UgUatZ7Uzy7BsSFOgXE8PMIJFum2eTkPCIEFs9Wt0jhGuTQJja6QzBKRaR5DfwpJQ cGGi2Ot2fBbXfTXhaQhQyWzlSkzNMSN1Ac54XMdB6Eg+ZFPz7p4lR6kBYnZl7as9Fj 5rguI7kVgEwAg== From: Conor Dooley To: linux-riscv@lists.infradead.org Cc: conor@kernel.org, Conor Dooley , Daire McNamara , Jassi Brar , linux-kernel@vger.kernel.org Subject: [PATCH v3 3/8] mailbox: mpfs: ditch a useless busy check Date: Tue, 7 Mar 2023 20:22:53 +0000 Message-Id: <20230307202257.1762151-4-conor@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230307202257.1762151-1-conor@kernel.org> References: <20230307202257.1762151-1-conor@kernel.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1067; i=conor.dooley@microchip.com; h=from:subject; bh=3TqNg+2iuqTO/EgEaud+uW5LomESwP/fUE4ltR1iLac=; b=owGbwMvMwCFWscWwfUFT0iXG02pJDCnsc4WyHSY+Wt4RdWbzMT3OCQZ3EuTZs1ns6pn2xYSzr Dzu81iko5SFQYyDQVZMkSXxdl+L1Po/Ljuce97CzGFlAhnCwMUpABOpOsXwP9CY27mex73y3I6j TUdyE4v9GizYw29b9p/yP7F4AvvzdIZ/pkfbvrwXYU14Eihi9rE0IStHwWDL4+zprzc8Yfkj2Li cDQA= X-Developer-Key: i=conor.dooley@microchip.com; a=openpgp; fpr=F9ECA03CF54F12CD01F1655722E2C55B37CF380C X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230307_122330_596840_F0FF4BAE X-CRM114-Status: GOOD ( 12.03 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Conor Dooley mpfs_mbox_rx_data() already checks if the system controller is busy before attempting to do anything, so drop the second check before reading any data. No functional change intended. Signed-off-by: Conor Dooley --- drivers/mailbox/mailbox-mpfs.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/mailbox/mailbox-mpfs.c b/drivers/mailbox/mailbox-mpfs.c index e0e825bdbad9..0d176aba3462 100644 --- a/drivers/mailbox/mailbox-mpfs.c +++ b/drivers/mailbox/mailbox-mpfs.c @@ -170,12 +170,10 @@ static void mpfs_mbox_rx_data(struct mbox_chan *chan) if (response->resp_status) return; - if (!mpfs_mbox_busy(mbox)) { - for (i = 0; i < num_words; i++) { - response->resp_msg[i] = - readl_relaxed(mbox->mbox_base - + mbox->resp_offset + i * 0x4); - } + for (i = 0; i < num_words; i++) { + response->resp_msg[i] = + readl_relaxed(mbox->mbox_base + + mbox->resp_offset + i * 0x4); } mbox_chan_received_data(chan, response);