summaryrefslogtreecommitdiff
path: root/drivers/pci/host/pcie-xilinx.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/pci/host/pcie-xilinx.c')
-rw-r--r--drivers/pci/host/pcie-xilinx.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/pci/host/pcie-xilinx.c b/drivers/pci/host/pcie-xilinx.c
index 61332f4d51c3..c3964fca57b0 100644
--- a/drivers/pci/host/pcie-xilinx.c
+++ b/drivers/pci/host/pcie-xilinx.c
@@ -337,14 +337,19 @@ static const struct irq_domain_ops msi_domain_ops = {
* xilinx_pcie_enable_msi - Enable MSI support
* @port: PCIe port information
*/
-static void xilinx_pcie_enable_msi(struct xilinx_pcie_port *port)
+static int xilinx_pcie_enable_msi(struct xilinx_pcie_port *port)
{
phys_addr_t msg_addr;
port->msi_pages = __get_free_pages(GFP_KERNEL, 0);
+ if (!port->msi_pages)
+ return -ENOMEM;
+
msg_addr = virt_to_phys((void *)port->msi_pages);
pcie_write(port, 0x0, XILINX_PCIE_REG_MSIBASE1);
pcie_write(port, msg_addr, XILINX_PCIE_REG_MSIBASE2);
+
+ return 0;
}
/* INTx Functions */
@@ -516,6 +521,7 @@ static int xilinx_pcie_init_irq_domain(struct xilinx_pcie_port *port)
struct device *dev = port->dev;
struct device_node *node = dev->of_node;
struct device_node *pcie_intc_node;
+ int ret;
/* Setup INTx */
pcie_intc_node = of_get_next_child(node, NULL);
@@ -544,7 +550,9 @@ static int xilinx_pcie_init_irq_domain(struct xilinx_pcie_port *port)
return -ENODEV;
}
- xilinx_pcie_enable_msi(port);
+ ret = xilinx_pcie_enable_msi(port);
+ if (ret)
+ return ret;
}
return 0;