From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 6C4BF2F25; Sat, 30 Mar 2024 04:20:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711772403; cv=none; b=Od/SNArw/om3266VyCJ14xX6E7pms8IvD7CHHAhChalwc2zLXTzN5RpEVE5bsab2d2SPCGr1gGCNyXK6O4ltI0ppJ4fyts4PDcSSTdWekQkN0pqIt1waLeuny3vzMoBg1foQMrqE6jtJgz7gK8CmWfsD3kI74POcVGY2pT0vLK4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711772403; c=relaxed/simple; bh=YVMNoSiitz/dvs9qFfJ1kX3I4aXTOvXdrC9wLQgAmDM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=RJzALF7Dr7+q7OS6DdBGAQQS/Z4rnNYK0fxsmDPvOSzB4aW6YUg5SWl1AgJ59s6ZebjFrv8tF1itv1wR9/TTPoulYMa+X1NtVIpWq8l5ODOpel8oInXZP+ieRoBhsaJq3gM85md1STfU9dc7xPbijOEqo14DQ2UqPCGLvRPAMYg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=r++DN4JK; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="r++DN4JK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4C803C433B2; Sat, 30 Mar 2024 04:20:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711772403; bh=YVMNoSiitz/dvs9qFfJ1kX3I4aXTOvXdrC9wLQgAmDM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=r++DN4JKgFjDxY1iFwmqxRwzgZuTk4mNOJi+LYaCgWKyGIfs2D8XntjdRsaLyzAQH TnQUZ1Cu50wjLhisu7iA1wemMxEUyPCXW5BZvCD7k5TsMAdaVlFZI3kFMAPOOHKM8R X9jzFXQVA3N8U1g1F4Bg6WQ+7eeAQvbJBKSrskcIMG6OHO/uO8JiLpuLoQtu4c+1I8 hmaS1pBhmCcJ4c3n/1DLZPIeT6vLT5IaKs+hqs/UUT+KxtsMwUYm5ntmlOGgQP61IU NlTCZhambH5YyHO/56Suv/kNVq44nvCJ5GwvquuCfwFpIdqkpJZN1s0cYL6sdkNQ8T 9V5pnLcZcQ34A== From: Damien Le Moal To: Manivannan Sadhasivam , Lorenzo Pieralisi , Kishon Vijay Abraham I , Shawn Lin , =?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= , Bjorn Helgaas , Heiko Stuebner , linux-pci@vger.kernel.org, Rob Herring , Krzysztof Kozlowski , Conor Dooley , devicetree@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Rick Wertenbroek , Wilfred Mallawa , Niklas Cassel Subject: [PATCH v2 10/18] PCI: rockchip-ep: Improve rockchip_pcie_ep_map_addr() Date: Sat, 30 Mar 2024 13:19:20 +0900 Message-ID: <20240330041928.1555578-11-dlemoal@kernel.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240330041928.1555578-1-dlemoal@kernel.org> References: <20240330041928.1555578-1-dlemoal@kernel.org> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add a check to verify that the outbound region to be used for mapping an address is not already in use. Signed-off-by: Damien Le Moal --- drivers/pci/controller/pcie-rockchip-ep.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pci/controller/pcie-rockchip-ep.c b/drivers/pci/controller/pcie-rockchip-ep.c index 93c2466d6fef..36692e34ca31 100644 --- a/drivers/pci/controller/pcie-rockchip-ep.c +++ b/drivers/pci/controller/pcie-rockchip-ep.c @@ -245,6 +245,9 @@ static int rockchip_pcie_ep_map_addr(struct pci_epc *epc, u8 fn, u8 vfn, struct rockchip_pcie *pcie = &ep->rockchip; u32 r = rockchip_ob_region(addr); + if (test_bit(r, &ep->ob_region_map)) + return -EBUSY; + rockchip_pcie_prog_ep_ob_atu(pcie, fn, r, addr, pci_addr, size); set_bit(r, &ep->ob_region_map); -- 2.44.0