[PATCH i-g-t v1 1/8] lib/igt_device_scan: Introduce filtering out non-PCI devices

[Kamil Konieczny]

From: Dominik Karol Piątkowski <dominik.karol.piatkowski at intel.com>

Introduced igt_device_filter_pci function that filters out non-PCI
devices from IGT devices.

Cc: Chris Wilson <chris.p.wilson at linux.intel.com>
Signed-off-by: Dominik Karol Piątkowski <dominik.karol.piatkowski at intel.com>
Signed-off-by: Kamil Konieczny <kamil.konieczny at linux.intel.com>
---
 lib/igt_device_scan.c | 21 +++++++++++++++++++++
 lib/igt_device_scan.h |  2 ++
 2 files changed, 23 insertions(+)

diff --git a/lib/igt_device_scan.c b/lib/igt_device_scan.c
index fbf3fa482..37ebe1964 100644
--- a/lib/igt_device_scan.c
+++ b/lib/igt_device_scan.c
@@ -1908,6 +1908,27 @@ const char *igt_device_filter_get(int num)
 	return NULL;
 }
 
+/**
+ * igt_device_filter_pci
+ *
+ * Filter devices to PCI only.
+ *
+ * Returns PCI devices count.
+ */
+int igt_device_filter_pci(void)
+{
+	int count = 0;
+	struct igt_device *dev, *tmp;
+
+	igt_list_for_each_entry_safe(dev, tmp, &igt_devs.filtered, link)
+		if (strcmp(dev->subsystem, "pci") != 0)
+			igt_list_del(&dev->link);
+		else
+			count++;
+
+	return count;
+}
+
 static bool igt_device_filter_apply(const char *fstr)
 {
 	struct igt_device *dev, *tmp;
diff --git a/lib/igt_device_scan.h b/lib/igt_device_scan.h
index 48690e236..908733745 100644
--- a/lib/igt_device_scan.h
+++ b/lib/igt_device_scan.h
@@ -81,6 +81,8 @@ int igt_device_filter_add(const char *filter);
 void igt_device_filter_free_all(void);
 const char *igt_device_filter_get(int num);
 
+int igt_device_filter_pci(void);
+
 /* Use filter to match the device and fill card structure */
 bool igt_device_card_match(const char *filter, struct igt_device_card *card);
 bool igt_device_card_match_pci(const char *filter,
-- 
2.42.0