From mboxrd@z Thu Jan 1 00:00:00 1970 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 AFB90C761AF for ; Thu, 23 Mar 2023 11:32:29 +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: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:In-Reply-To:References: List-Owner; bh=KXRd0ti3TzjEEHZRJRGU7sMn5u6hg0cthQ+/FdPgJ0E=; b=vlsYcpnb28F/ZP eCEqggTZPg4eCTKtaxqxfVhcpLw93m+wKk8/Jzn8+FO50+mXAklK0vTkaanBPCcsEpIFMPtniYEF9 JVY1nrQcbYUE0sVzRPgXCuOSo+fbQbl5Rhk6zhrLs0B/5igSRg18moPwEcFyCS/Zf7fkPGF2hhWC+ gMLefQSXBib46ZflBbA31/bQoizUirpOSUAEKlaJep8V2nYYay3FTw966EFGNsx4yjtJUQafOdP5/ kjYNq58+394IR4Y+xoN+ltVwqkuTqxS74JuZeq/SGmPMxzcE0QKpQIH5FO7JXnZGUSIKYe5i5cMqN LMxeCrLWdAD+AHm8yMhw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pfJBF-001jqR-0s for ath12k@archiver.kernel.org; Thu, 23 Mar 2023 11:32:29 +0000 Received: from out-7.mta1.migadu.com ([2001:41d0:203:375::7]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pfJB6-001jke-06 for ath12k@lists.infradead.org; Thu, 23 Mar 2023 11:32:24 +0000 X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1679570783; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=rFrZeFL95bAADeoxTVP7Nzd5sq/6QShfuHH0D38gefI=; b=iieSNHbLTfna/AJWw4ifxYEls++cBF9dlNm9peQh4RNpnr/S41QQfmoR6P1mfO93mmDEm/ sUOXphPRjd2lfzh8OKjD0eTzs73xofcjuI6u/1+T2KsrkL9xXCatCQFGOu976gs0BeEbgp oYmUYiuMI5+e3DM0+fDsGgf8JSQ62BM= From: Cai Huoqing To: cai.huoqing@linux.dev Cc: Kalle Valo , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Yan-Hsuan Chuang , Ping-Ke Shih , ath10k@lists.infradead.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, ath11k@lists.infradead.org, ath12k@lists.infradead.org Subject: [PATCH 1/5] wifi: ath11k: Remove redundant pci_clear_master Date: Thu, 23 Mar 2023 19:26:09 +0800 Message-Id: <20230323112613.7550-1-cai.huoqing@linux.dev> MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230323_043220_269290_F8DDDBAA X-CRM114-Status: UNSURE ( 8.17 ) X-CRM114-Notice: Please train this message. X-BeenThere: ath12k@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "ath12k" Errors-To: ath12k-bounces+ath12k=archiver.kernel.org@lists.infradead.org Remove pci_clear_master to simplify the code, the bus-mastering is also cleared in do_pci_disable_device, like this: ./drivers/pci/pci.c:2197 static void do_pci_disable_device(struct pci_dev *dev) { u16 pci_command; pci_read_config_word(dev, PCI_COMMAND, &pci_command); if (pci_command & PCI_COMMAND_MASTER) { pci_command &= ~PCI_COMMAND_MASTER; pci_write_config_word(dev, PCI_COMMAND, pci_command); } pcibios_disable_device(dev); }. And dev->is_busmaster is set to 0 in pci_disable_device. Signed-off-by: Cai Huoqing --- drivers/net/wireless/ath/ath11k/pci.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/net/wireless/ath/ath11k/pci.c b/drivers/net/wireless/ath/ath11k/pci.c index 0aeef2948ff5..522d01e5e11c 100644 --- a/drivers/net/wireless/ath/ath11k/pci.c +++ b/drivers/net/wireless/ath/ath11k/pci.c @@ -540,7 +540,7 @@ static int ath11k_pci_claim(struct ath11k_pci *ab_pci, struct pci_dev *pdev) if (!ab->mem) { ath11k_err(ab, "failed to map pci bar %d\n", ATH11K_PCI_BAR_NUM); ret = -EIO; - goto clear_master; + goto release_region; } ab->mem_ce = ab->mem; @@ -548,8 +548,6 @@ static int ath11k_pci_claim(struct ath11k_pci *ab_pci, struct pci_dev *pdev) ath11k_dbg(ab, ATH11K_DBG_BOOT, "boot pci_mem 0x%pK\n", ab->mem); return 0; -clear_master: - pci_clear_master(pdev); release_region: pci_release_region(pdev, ATH11K_PCI_BAR_NUM); disable_device: @@ -565,7 +563,6 @@ static void ath11k_pci_free_region(struct ath11k_pci *ab_pci) pci_iounmap(pci_dev, ab->mem); ab->mem = NULL; - pci_clear_master(pci_dev); pci_release_region(pci_dev, ATH11K_PCI_BAR_NUM); if (pci_is_enabled(pci_dev)) pci_disable_device(pci_dev); -- 2.34.1 -- ath12k mailing list ath12k@lists.infradead.org https://lists.infradead.org/mailman/listinfo/ath12k