firmware_loader: handle timeout via wait_for_completion_interruptible_timeout()

It is simpler to handle timeout by wait_for_completion_interruptible_timeout(),
so remove previous delay work for timeout.

Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index 5870ec3..60ac9c3 100644 (file)
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -94,7 +94,7 @@ static int loading_timeout = 60;      /* In seconds */
 
 static inline long firmware_loading_timeout(void)
 {
-       return loading_timeout > 0 ? loading_timeout * HZ : MAX_SCHEDULE_TIMEOUT;
+       return loading_timeout > 0 ? loading_timeout * HZ : MAX_JIFFY_OFFSET;
 }
 
 /* firmware behavior options */
@@ -446,7 +446,6 @@ static int fw_add_devm_name(struct device *dev, const char *name)
  */
 #ifdef CONFIG_FW_LOADER_USER_HELPER
 struct firmware_priv {
-       struct delayed_work timeout_work;
        bool nowait;
        struct device dev;
        struct firmware_buf *buf;
@@ -836,16 +835,6 @@ static struct bin_attribute firmware_attr_data = {
        .write = firmware_data_write,
 };
 
-static void firmware_class_timeout_work(struct work_struct *work)
-{
-       struct firmware_priv *fw_priv = container_of(work,
-                       struct firmware_priv, timeout_work.work);
-
-       mutex_lock(&fw_lock);
-       fw_load_abort(fw_priv);
-       mutex_unlock(&fw_lock);
-}
-
 static struct firmware_priv *
 fw_create_instance(struct firmware *firmware, const char *fw_name,
                   struct device *device, unsigned int opt_flags)
@@ -862,9 +851,6 @@ fw_create_instance(struct firmware *firmware, const char *fw_name,
 
        fw_priv->nowait = !!(opt_flags & FW_OPT_NOWAIT);
        fw_priv->fw = firmware;
-       INIT_DELAYED_WORK(&fw_priv->timeout_work,
-               firmware_class_timeout_work);
-
        f_dev = &fw_priv->dev;
 
        device_initialize(f_dev);
@@ -917,18 +903,14 @@ static int _request_firmware_load(struct firmware_priv *fw_priv,
                buf->need_uevent = true;
                dev_set_uevent_suppress(f_dev, false);
                dev_dbg(f_dev, "firmware: requesting %s\n", buf->fw_id);
-               if (timeout != MAX_SCHEDULE_TIMEOUT)
-                       queue_delayed_work(system_power_efficient_wq,
-                                          &fw_priv->timeout_work, timeout);
-
                kobject_uevent(&fw_priv->dev.kobj, KOBJ_ADD);
+       } else {
+               timeout = MAX_JIFFY_OFFSET;
        }
 
-       retval = wait_for_completion_interruptible(&buf->completion);
-
-       cancel_delayed_work_sync(&fw_priv->timeout_work);
-
-       if (retval == -ERESTARTSYS) {
+       retval = wait_for_completion_interruptible_timeout(&buf->completion,
+                       timeout);
+       if (retval == -ERESTARTSYS || !retval) {
                mutex_lock(&fw_lock);
                fw_load_abort(fw_priv);
                mutex_unlock(&fw_lock);