void set_trace_device(struct device *dev)
{
- dev_hash_value = hash_string(DEVSEED, dev->bus_id, DEVHASH);
+ dev_hash_value = hash_string(DEVSEED, dev_name(dev), DEVHASH);
}
EXPORT_SYMBOL(set_trace_device);
static int show_dev_hash(unsigned int value)
{
int match = 0;
- struct list_head *entry = dpm_list.prev;
+ struct list_head *entry;
+ device_pm_lock();
+ entry = dpm_list.prev;
while (entry != &dpm_list) {
struct device * dev = to_device(entry);
- unsigned int hash = hash_string(DEVSEED, dev->bus_id, DEVHASH);
+ unsigned int hash = hash_string(DEVSEED, dev_name(dev), DEVHASH);
if (hash == value) {
dev_info(dev, "hash matches\n");
match++;
}
entry = entry->prev;
}
+ device_pm_unlock();
return match;
}
static unsigned int hash_value_early_read;
+int show_trace_dev_match(char *buf, size_t size)
+{
+ unsigned int value = hash_value_early_read / (USERHASH * FILEHASH);
+ int ret = 0;
+ struct list_head *entry;
+
+ /*
+ * It's possible that multiple devices will match the hash and we can't
+ * tell which is the culprit, so it's best to output them all.
+ */
+ device_pm_lock();
+ entry = dpm_list.prev;
+ while (size && entry != &dpm_list) {
+ struct device *dev = to_device(entry);
+ unsigned int hash = hash_string(DEVSEED, dev_name(dev),
+ DEVHASH);
+ if (hash == value) {
+ int len = snprintf(buf, size, "%s\n",
+ dev_driver_string(dev));
+ if (len > size)
+ len = size;
+ buf += len;
+ ret += len;
+ size -= len;
+ }
+ entry = entry->prev;
+ }
+ device_pm_unlock();
+ return ret;
+}
+
static int early_resume_init(void)
{
hash_value_early_read = read_magic_time();