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AJvYcCWbsUO5BQvywwwFGQw9MRXV40IjILT41qdXsE2wopjrv1e1GaKLG1lEy/cNXy7zG/AzCWdnvmnbelqW@vger.kernel.org X-Gm-Message-State: AOJu0YzmoGl605p5YXqgYEyYhVGgTkEZaG8qgm54ZK03U9NuuMbOLdCJ qcVTwHk080tmaA+k7MrfsT3/eV5/XJpzkOfPZ3KYx0zv7My68cBHvTxsg0T49w== X-Google-Smtp-Source: AGHT+IEO0BjF4lnOqXZimpvv6/cR8GzLT8i2pb0ODWlwAKixhY/VBPqgnDGQ91Lcitig4AdIMRVtXg== X-Received: by 2002:a05:6a00:180e:b0:71e:9a8:2b9a with SMTP id d2e1a72fcca58-71e2680ad36mr4297170b3a.23.1728544443338; Thu, 10 Oct 2024 00:14:03 -0700 (PDT) Received: from thinkpad ([220.158.156.184]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-7ea4496816esm385681a12.89.2024.10.10.00.13.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Oct 2024 00:14:02 -0700 (PDT) Date: Thu, 10 Oct 2024 12:43:57 +0530 From: Manivannan Sadhasivam To: Damien Le Moal Cc: Lorenzo Pieralisi , Kishon Vijay Abraham I , Shawn Lin , Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= , Bjorn Helgaas , Heiko Stuebner , linux-pci@vger.kernel.org, Rob Herring , Krzysztof Kozlowski , Conor Dooley , devicetree@vger.kernel.org, linux-rockchip@lists.infradead.org, Rick Wertenbroek , Wilfred Mallawa , Niklas Cassel Subject: Re: [PATCH v3 04/12] PCI: rockchip-ep: Improve rockchip_pcie_ep_map_addr() Message-ID: <20241010071357.c3kck3rxdhvy6m67@thinkpad> References: <20241007041218.157516-1-dlemoal@kernel.org> <20241007041218.157516-5-dlemoal@kernel.org> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20241007041218.157516-5-dlemoal@kernel.org> On Mon, Oct 07, 2024 at 01:12:10PM +0900, Damien Le Moal wrote: > 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 Reviewed-by: Manivannan Sadhasivam - Mani > --- > 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 89ebdf3e4737..edb84fb1ba39 100644 > --- a/drivers/pci/controller/pcie-rockchip-ep.c > +++ b/drivers/pci/controller/pcie-rockchip-ep.c > @@ -243,6 +243,9 @@ 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); > -- > 2.46.2 > -- மணிவண்ணன் சதாசிவம்