| Message ID | 20200924190557.48fddba5@xhacker.debian (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | PCI: dwc: improve msi handling | expand |
On Thu, Sep 24, 2020 at 12:5:57, Jisheng Zhang <Jisheng.Zhang@synaptics.com> wrote: > In dw_pcie_free_msi(), call dma_unmap_page() before freeing. > > Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com> > --- > 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 Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
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)
In dw_pcie_free_msi(), call dma_unmap_page() before freeing. Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com> --- drivers/pci/controller/dwc/pcie-designware-host.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)