1 files changed, 34 insertions, 4 deletions

diff --git a/lib/sysfs_driver.c b/lib/sysfs_driver.c
index f2145e0..1ccaf03 100644
--- a/lib/sysfs_driver.c
+++ b/lib/sysfs_driver.c
@@ -98,11 +98,11 @@ static struct sysfs_driver *alloc_driver(void)
 }
 
 /**
- * sysfs_open_driver: opens and initializes driver structure
+ * sysfs_open_driver_path: opens and initializes driver structure
  * @path: path to driver directory
  * returns struct sysfs_driver with success and NULL with error
  */
-struct sysfs_driver *sysfs_open_driver(const unsigned char *path)
+struct sysfs_driver *sysfs_open_driver_path(const unsigned char *path)
 {
 	struct sysfs_driver *driver = NULL;
 	struct sysfs_directory *sdir = NULL;
@@ -243,7 +243,7 @@ struct dlist *sysfs_get_driver_devices(struct sysfs_driver *driver)
 	if (driver->directory->links != NULL) {
 		dlist_for_each_data(driver->directory->links, curlink, 
 						struct sysfs_link) {
-			device = sysfs_open_device(curlink->target);
+			device = sysfs_open_device_path(curlink->target);
 			if (device == NULL) {
 				dprintf("Error opening device at %s\n", 
 						curlink->target);
@@ -345,7 +345,7 @@ struct sysfs_attribute *sysfs_open_driver_attr(const unsigned char *bus,
 		return NULL;
 	}
 
-	memset(path, 0, SYSFS_NAME_LEN);
+	memset(path, 0, SYSFS_PATH_MAX);
 	if ((get_driver_path(bus, drv, path, SYSFS_PATH_MAX)) != 0) {
 		dprintf("Error getting to driver %s\n", drv);
 		return NULL;
@@ -367,3 +367,33 @@ struct sysfs_attribute *sysfs_open_driver_attr(const unsigned char *bus,
 	return attribute;
 }
 
+/**
+ * sysfs_open_driver: open driver by name, given its bus
+ * @drv_name: Name of the driver
+ * @bus_name: Name of the bus
+ * Returns the sysfs_driver reference on success and NULL on failure
+ */
+struct sysfs_driver *sysfs_open_driver(const unsigned char *drv_name,
+				const unsigned char *bus_name)
+{
+	unsigned char path[SYSFS_PATH_MAX];
+	struct sysfs_driver *driver = NULL;
+
+	if (drv_name == NULL || bus_name == NULL) {
+		errno = EINVAL;
+		return NULL;
+	}
+
+	memset(path, 0, SYSFS_PATH_MAX);
+	if ((get_driver_path(bus_name, drv_name, path, SYSFS_PATH_MAX)) != 0) {
+		dprintf("Error getting to driver %s\n", drv_name);
+		return NULL;
+	}
+	driver = sysfs_open_driver_path(path);
+	if (driver == NULL) {
+		dprintf("Error opening driver at %s\n", path);
+		return NULL;
+	}
+	return driver;
+}
+