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authorChris Wilson <chris@chris-wilson.co.uk>2016-10-14 18:32:51 +0100
committerChris Wilson <chris@chris-wilson.co.uk>2016-10-14 18:49:37 +0100
commitacd5d3d3657b04a47418a95d9301835e6d64c86c (patch)
treef0bc8daaeacdc590be20d62251b3a37dd96ae998
parent7dcf7bf0be339c3e6cfd5b403e624654653b5c63 (diff)
lib/sysfs: Use a fallback for builtin modules
A builtin modules does not have a sysfs/device/module symlink, so be creative. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
-rw-r--r--lib/igt_sysfs.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/lib/igt_sysfs.c b/lib/igt_sysfs.c
index 4dc57365..612de751 100644
--- a/lib/igt_sysfs.c
+++ b/lib/igt_sysfs.c
@@ -151,6 +151,20 @@ int igt_sysfs_open_parameters(int device)
params = openat(dir, "device/driver/module/parameters", O_RDONLY);
close(dir);
+ if (params < 0) { /* builtin? */
+ drm_version_t version;
+ char name[32] = "";
+ char path[128];
+
+ memset(&version, 0, sizeof(version));
+ version.name_len = sizeof(name);
+ version.name = name;
+ ioctl(device, DRM_IOCTL_VERSION, &version);
+
+ sprintf(path, "/sys/module/%s/parameters", name);
+ params = open(path, O_RDONLY);
+ }
+
return params;
}
/**