[PATCH v2 2/5] PCI: dwc: Free the page for MSI IRQ in dw_pcie_free_msi()

Jisheng Zhang
2019-03-01T05:04:16Z

To avoid memory leak, we need to free the page for MSI in
dw_pcie_free_msi().

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
---
drivers/pci/controller/dwc/pcie-designware-host.c | 3 +++
drivers/pci/controller/dwc/pcie-designware.h | 1 +
2 files changed, 4 insertions(+)

diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index a94d3530b694..abe3ff5f0867 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -305,6 +305,8 @@ void dw_pcie_free_msi(struct pcie_port *pp)

irq_domain_remove(pp->msi_domain);
irq_domain_remove(pp->irq_domain);
+
+ __free_page(pp->msi_page);
}

void dw_pcie_msi_init(struct pcie_port *pp)
@@ -322,6 +324,7 @@ void dw_pcie_msi_init(struct pcie_port *pp)
return;
}
msi_target = (u64)pp->msi_data;
+ pp->msi_page = page;

/* Program the msi_data */
dw_pcie_wr_own_conf(pp, PCIE_MSI_ADDR_LO, 4,
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index f6fb65a40f10..3be7ca9f1fc3 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -179,6 +179,7 @@ struct pcie_port {
struct irq_domain *irq_domain;
struct irq_domain *msi_domain;
dma_addr_t msi_data;
+ struct page *msi_page;
u32 num_vectors;
u32 irq_mask[MAX_MSI_CTRLS];
raw_spinlock_t lock;
--
2.20.1