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path: root/drivers/of/of_pci.c
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Diffstat (limited to 'drivers/of/of_pci.c')
-rw-r--r--drivers/of/of_pci.c36
1 files changed, 22 insertions, 14 deletions
diff --git a/drivers/of/of_pci.c b/drivers/of/of_pci.c
index 5751dc5b6..b1449f716 100644
--- a/drivers/of/of_pci.c
+++ b/drivers/of/of_pci.c
@@ -5,6 +5,7 @@
#include <linux/of_device.h>
#include <linux/of_pci.h>
#include <linux/slab.h>
+#include <asm-generic/pci-bridge.h>
static inline int __of_pci_pci_compare(struct device_node *node,
unsigned int data)
@@ -118,24 +119,29 @@ int of_get_pci_domain_nr(struct device_node *node)
EXPORT_SYMBOL_GPL(of_get_pci_domain_nr);
/**
- * of_pci_dma_configure - Setup DMA configuration
- * @dev: ptr to pci_dev struct of the PCI device
- *
- * Function to update PCI devices's DMA configuration using the same
- * info from the OF node of host bridge's parent (if any).
+ * of_pci_check_probe_only - Setup probe only mode if linux,pci-probe-only
+ * is present and valid
*/
-void of_pci_dma_configure(struct pci_dev *pci_dev)
+void of_pci_check_probe_only(void)
{
- struct device *dev = &pci_dev->dev;
- struct device *bridge = pci_get_host_bridge_device(pci_dev);
+ u32 val;
+ int ret;
- if (!bridge->parent)
+ ret = of_property_read_u32(of_chosen, "linux,pci-probe-only", &val);
+ if (ret) {
+ if (ret == -ENODATA || ret == -EOVERFLOW)
+ pr_warn("linux,pci-probe-only without valid value, ignoring\n");
return;
+ }
+
+ if (val)
+ pci_add_flags(PCI_PROBE_ONLY);
+ else
+ pci_clear_flags(PCI_PROBE_ONLY);
- of_dma_configure(dev, bridge->parent->of_node);
- pci_put_host_bridge_device(bridge);
+ pr_info("PCI: PROBE_ONLY %sabled\n", val ? "en" : "dis");
}
-EXPORT_SYMBOL_GPL(of_pci_dma_configure);
+EXPORT_SYMBOL_GPL(of_pci_check_probe_only);
#if defined(CONFIG_OF_ADDRESS)
/**
@@ -223,8 +229,10 @@ int of_pci_get_host_bridge_resources(struct device_node *dev,
}
err = of_pci_range_to_resource(&range, dev, res);
- if (err)
- goto conversion_failed;
+ if (err) {
+ kfree(res);
+ continue;
+ }
if (resource_type(res) == IORESOURCE_IO) {
if (!io_base) {