Patch set updated for coreboot: src/device: Get device structure by path type

[Subrata Banik]

Subrata Banik ([e-mail]) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/17731

-gerrit

commit aaaf608e0fb4661c2652f4a0fbd6fff8edd8dce8
Author: Subrata Banik 
Date:   Tue Dec 6 18:06:30 2016 +0530

src/device: Get device structure by path type

Add helper function to find a device by path type
    in the device tree.

Change-Id: I8846f63bd2488788ea3c7ab5154e7cf431a252bc
    Credits-to: Aaron Durbin 
    Signed-off-by: Subrata Banik 
    Signed-off-by: Dhaval V Sharma 
---
 src/device/device_util.c    | 25 +++++++++++++++++++++++++
 src/include/device/device.h |  1 +
 2 files changed, 26 insertions(+)

diff --git a/src/device/device_util.c b/src/device/device_util.c
index 56afefd..f60074f 100644
--- a/src/device/device_util.c
+++ b/src/device/device_util.c
@@ -131,6 +131,31 @@ device_t dev_find_lapic(unsigned apic_id)
 }

/**
+ * Given a Device Path Type, find the device structure.
+ *
+ * @param prev_match The previously matched device instance.
+ * @param path_type The Device Path Type.
+ * @return Pointer to the device structure (if found), 0 otherwise.
+ */
+device_t dev_find_path(device_t prev_match, enum device_path_type path_type)
+{
+	device_t dev, result = NULL;
+
+	if (prev_match == NULL)
+		prev_match = all_devices;
+	else
+		prev_match = prev_match->next;
+
+	for (dev = prev_match; dev; dev = dev->next) {
+		if (dev->path.type == path_type) {
+			result = dev;
+			break;
+		}
+	}
+	return result;
+}
+
+/**
  * Find a device of a given vendor and type.
  *
  * @param vendor A PCI vendor ID (e.g. 0x8086 for Intel).
diff --git a/src/include/device/device.h b/src/include/device/device.h
index 95fabf4..f3de65b 100644
--- a/src/include/device/device.h
+++ b/src/include/device/device.h
@@ -195,6 +195,7 @@ device_t find_dev_path(struct bus *parent, struct device_path *path);
 device_t alloc_find_dev(struct bus *parent, struct device_path *path);
 device_t dev_find_device (u16 vendor, u16 device, device_t from);
 device_t dev_find_class (unsigned int class, device_t from);
+device_t dev_find_path(device_t prev_match, enum device_path_type path_type);
 device_t dev_find_slot (unsigned int bus, unsigned int devfn);
 device_t dev_find_slot_on_smbus (unsigned int bus, unsigned int addr);
 device_t dev_find_slot_pnp(u16 port, u16 device);