diff options
| -rw-r--r-- | drivers/base/firmware_class.c | 29 |
1 files changed, 14 insertions, 15 deletions
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c index 900b139668e8..58b661df6d34 100644 --- a/drivers/base/firmware_class.c +++ b/drivers/base/firmware_class.c @@ -562,32 +562,29 @@ static void fw_load_abort(struct firmware_priv *fw_priv) static LIST_HEAD(pending_fw_head); -#ifdef CONFIG_PM_SLEEP -/* kill pending requests without uevent to avoid blocking suspend */ -static void kill_requests_without_uevent(void) +static void kill_pending_fw_fallback_reqs(bool only_kill_custom) { struct firmware_buf *buf; struct firmware_buf *next; mutex_lock(&fw_lock); list_for_each_entry_safe(buf, next, &pending_fw_head, pending_list) { - if (!buf->need_uevent) + if (!buf->need_uevent || !only_kill_custom) __fw_load_abort(buf); } mutex_unlock(&fw_lock); } -#endif /* reboot notifier for avoid deadlock with usermode_lock */ static int fw_shutdown_notify(struct notifier_block *unused1, unsigned long unused2, void *unused3) { - mutex_lock(&fw_lock); - while (!list_empty(&pending_fw_head)) - __fw_load_abort(list_first_entry(&pending_fw_head, - struct firmware_buf, - pending_list)); - mutex_unlock(&fw_lock); + /* + * Kill all pending fallback requests to avoid both stalling shutdown, + * and avoid a deadlock with the usermode_lock. + */ + kill_pending_fw_fallback_reqs(false); + return NOTIFY_DONE; } @@ -1073,9 +1070,7 @@ fw_load_from_user_helper(struct firmware *firmware, const char *name, return -ENOENT; } -#ifdef CONFIG_PM_SLEEP -static inline void kill_requests_without_uevent(void) { } -#endif +static inline void kill_pending_fw_fallback_reqs(bool only_kill_custom) { } #endif /* CONFIG_FW_LOADER_USER_HELPER */ @@ -1724,7 +1719,11 @@ static int fw_pm_notify(struct notifier_block *notify_block, case PM_HIBERNATION_PREPARE: case PM_SUSPEND_PREPARE: case PM_RESTORE_PREPARE: - kill_requests_without_uevent(); + /* + * kill pending fallback requests with a custom fallback + * to avoid stalling suspend. + */ + kill_pending_fw_fallback_reqs(true); device_cache_fw_images(); break; |