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Thu, 24 Sep 2020 11:10:01 +0000 Date: Thu, 24 Sep 2020 19:05:57 +0800 From: Jisheng Zhang To: Kishon Vijay Abraham I , Lorenzo Pieralisi , Rob Herring , Bjorn Helgaas , Jingoo Han , Kukjin Kim , Krzysztof Kozlowski , Richard Zhu , Lucas Stach , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , Yue Wang , Kevin Hilman , Neil Armstrong , Jerome Brunet , Martin Blumenstingl , Jesper Nilsson , Gustavo Pimentel , Xiaowei Song , Binghui Wang , Andy Gross , Bjorn Andersson , Stanimir Varbanov , Pratyush Anand , Thierry Reding , Jonathan Hunter , Kunihiko Hayashi , Masahiro Yamada Cc: linux-omap@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-arm-kernel@axis.com, linux-arm-msm@vger.kernel.org, linux-tegra@vger.kernel.org Subject: [PATCH v2 1/5] PCI: dwc: Call dma_unmap_page() before freeing the msi page Message-ID: <20200924190557.48fddba5@xhacker.debian> In-Reply-To: <20200924190421.549cb8fc@xhacker.debian> References: <20200924190421.549cb8fc@xhacker.debian> X-Mailer: Claws Mail 3.17.6 (GTK+ 2.24.32; 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Signed-off-by: Jisheng Zhang Acked-by: Gustavo Pimentel --- drivers/pci/controller/dwc/pcie-designware-host.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c index 9dafecba347f..0a19de946351 100644 --- a/drivers/pci/controller/dwc/pcie-designware-host.c +++ b/drivers/pci/controller/dwc/pcie-designware-host.c @@ -288,8 +288,12 @@ void dw_pcie_free_msi(struct pcie_port *pp) irq_domain_remove(pp->msi_domain); irq_domain_remove(pp->irq_domain); - if (pp->msi_page) + if (pp->msi_page) { + struct dw_pcie *pci = to_dw_pcie_from_pp(pp); + struct device *dev = pci->dev; + dma_unmap_page(dev, pp->msi_data, PAGE_SIZE, DMA_FROM_DEVICE); __free_page(pp->msi_page); + } } void dw_pcie_msi_init(struct pcie_port *pp)