Merge tag 'driver-core-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core patches from Greg KH:
 "Here's the big driver core pull request for 3.12-rc1.

  Lots of tiny changes here fixing up the way sysfs attributes are
  created, to try to make drivers simpler, and fix a whole class race
  conditions with creations of device attributes after the device was
  announced to userspace.

  All the various pieces are acked by the different subsystem
  maintainers"

* tag 'driver-core-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (119 commits)
  firmware loader: fix pending_fw_head list corruption
  drivers/base/memory.c: introduce help macro to_memory_block
  dynamic debug: line queries failing due to uninitialized local variable
  sysfs: sysfs_create_groups returns a value.
  debugfs: provide debugfs_create_x64() when disabled
  rbd: convert bus code to use bus_groups
  firmware: dcdbas: use binary attribute groups
  sysfs: add sysfs_create/remove_groups for when SYSFS is not enabled
  driver core: add #include <linux/sysfs.h> to core files.
  HID: convert bus code to use dev_groups
  Input: serio: convert bus code to use drv_groups
  Input: gameport: convert bus code to use drv_groups
  driver core: firmware: use __ATTR_RW()
  driver core: core: use DEVICE_ATTR_RO
  driver core: bus: use DRIVER_ATTR_WO()
  driver core: create write-only attribute macros for devices and drivers
  sysfs: create __ATTR_WO()
  driver-core: platform: convert bus code to use dev_groups
  workqueue: convert bus code to use dev_groups
  MEI: convert bus code to use dev_groups
  ...

1 files changed, 12 insertions, 12 deletions

diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index a439602ea919..10a4467c63f1 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -486,9 +486,8 @@ static struct notifier_block fw_shutdown_nb = {
 	.notifier_call = fw_shutdown_notify,
 };
 
-static ssize_t firmware_timeout_show(struct class *class,
-				     struct class_attribute *attr,
-				     char *buf)
+static ssize_t timeout_show(struct class *class, struct class_attribute *attr,
+			    char *buf)
 {
 	return sprintf(buf, "%d\n", loading_timeout);
 }
@@ -506,9 +505,8 @@ static ssize_t firmware_timeout_show(struct class *class,
  *
  *	Note: zero means 'wait forever'.
  **/
-static ssize_t firmware_timeout_store(struct class *class,
-				      struct class_attribute *attr,
-				      const char *buf, size_t count)
+static ssize_t timeout_store(struct class *class, struct class_attribute *attr,
+			     const char *buf, size_t count)
 {
 	loading_timeout = simple_strtol(buf, NULL, 10);
 	if (loading_timeout < 0)
@@ -518,8 +516,7 @@ static ssize_t firmware_timeout_store(struct class *class,
 }
 
 static struct class_attribute firmware_class_attrs[] = {
-	__ATTR(timeout, S_IWUSR | S_IRUGO,
-		firmware_timeout_show, firmware_timeout_store),
+	__ATTR_RW(timeout),
 	__ATTR_NULL
 };
 
@@ -868,8 +865,15 @@ static int _request_firmware_load(struct firmware_priv *fw_priv, bool uevent,
 		goto err_del_dev;
 	}
 
+	mutex_lock(&fw_lock);
+	list_add(&buf->pending_list, &pending_fw_head);
+	mutex_unlock(&fw_lock);
+
 	retval = device_create_file(f_dev, &dev_attr_loading);
 	if (retval) {
+		mutex_lock(&fw_lock);
+		list_del_init(&buf->pending_list);
+		mutex_unlock(&fw_lock);
 		dev_err(f_dev, "%s: device_create_file failed\n", __func__);
 		goto err_del_bin_attr;
 	}
@@ -884,10 +888,6 @@ static int _request_firmware_load(struct firmware_priv *fw_priv, bool uevent,
 		kobject_uevent(&fw_priv->dev.kobj, KOBJ_ADD);
 	}
 
-	mutex_lock(&fw_lock);
-	list_add(&buf->pending_list, &pending_fw_head);
-	mutex_unlock(&fw_lock);
-
 	wait_for_completion(&buf->completion);
 
 	cancel_delayed_work_sync(&fw_priv->timeout_work);