[PATCH v2 1/5] PCI: dwc: Call dma_unmap_page() before freeing the msi page
From: Jisheng Zhang <hidden>
Date: 2020-09-24 11:10:07
Also in:
linux-amlogic, linux-arm-msm, linux-omap, linux-pci, linux-samsung-soc, linux-tegra, lkml
Subsystem:
pci driver for synopsys designware, pci native host bridge and endpoint drivers, pci subsystem, the rest · Maintainers:
Jingoo Han, Manivannan Sadhasivam, Lorenzo Pieralisi, Krzysztof Wilczyński, Bjorn Helgaas, Linus Torvalds
In dw_pcie_free_msi(), call dma_unmap_page() before freeing. Signed-off-by: Jisheng Zhang <redacted> --- 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)
--
2.28.0
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