diff options
Diffstat (limited to 'wait_for_sysfs.c')
| -rw-r--r-- | wait_for_sysfs.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/wait_for_sysfs.c b/wait_for_sysfs.c index f87253d044..a5d8ab4111 100644 --- a/wait_for_sysfs.c +++ b/wait_for_sysfs.c @@ -101,11 +101,11 @@ static int wait_for_class_device_attributes(struct sysfs_class_device *class_dev return -1; } -/* skip waiting for physical device */ +/* check if we need to wait for a physical device */ static int class_device_expect_no_device_link(struct sysfs_class_device *class_dev) { - /* List of devices without a "device" symlink - * set .device to NULL to accept all devices in that subsystem */ + /* list of devices without a "device" symlink to the physical device + * if device is set to NULL, no devices in that subsystem has a link */ static struct class_device { char *subsystem; char *device; @@ -160,10 +160,9 @@ static int class_device_expect_no_device_link(struct sysfs_class_device *class_d struct class_device *classdevice; int len; - /* look if we want to look for another file instead of "dev" */ for (classdevice = class_device; classdevice->subsystem != NULL; classdevice++) { if (strcmp(class_dev->classname, classdevice->subsystem) == 0) { - /* if device is NULL, all devices in this class are ok */ + /* see if no device in this class is expected to have a device-link */ if (classdevice->device == NULL) return 1; @@ -173,11 +172,11 @@ static int class_device_expect_no_device_link(struct sysfs_class_device *class_d if (strncmp(class_dev->name, classdevice->device, len) != 0) continue; - /* exact match */ + /* exact name match */ if (strlen(class_dev->name) == len) return 1; - /* instance numbers are matching too */ + /* name match with instance number */ if (isdigit(class_dev->name[len])) return 1; } |