@@ -42,7 +42,6 @@
#include <linux/miscdevice.h>
#include <linux/log2.h>
#include <linux/kthread.h>
-#include <linux/reboot.h>
#include <linux/kernel.h>
#include "ubi.h"
@@ -831,34 +830,6 @@ static int autoresize(struct ubi_device *ubi, int vol_id)
}
/**
- * ubi_reboot_notifier - halt UBI transactions immediately prior to a reboot.
- * @n: reboot notifier object
- * @state: SYS_RESTART, SYS_HALT, or SYS_POWER_OFF
- * @cmd: pointer to command string for RESTART2
- *
- * This function stops the UBI background thread so that the flash device
- * remains quiescent when Linux restarts the system. Any queued work will be
- * discarded, but this function will block until do_work() finishes if an
- * operation is already in progress.
- *
- * This function solves a real-life problem observed on NOR flashes when an
- * PEB erase operation starts, then the system is rebooted before the erase is
- * finishes, and the boot loader gets confused and dies. So we prefer to finish
- * the ongoing operation before rebooting.
- */
-static int ubi_reboot_notifier(struct notifier_block *n, unsigned long state,
- void *cmd)
-{
- struct ubi_device *ubi;
-
- ubi = container_of(n, struct ubi_device, reboot_notifier);
- if (ubi->bgt_thread)
- kthread_stop(ubi->bgt_thread);
- ubi_sync(ubi->ubi_num);
- return NOTIFY_DONE;
-}
-
-/**
* ubi_attach_mtd_dev - attach an MTD device.
* @mtd: MTD device description object
* @ubi_num: number to assign to the new UBI device
@@ -1015,11 +986,6 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset)
wake_up_process(ubi->bgt_thread);
spin_unlock(&ubi->wl_lock);
- /* Flash device priority is 0 - UBI needs to shut down first */
- ubi->reboot_notifier.priority = 1;
- ubi->reboot_notifier.notifier_call = ubi_reboot_notifier;
- register_reboot_notifier(&ubi->reboot_notifier);
-
ubi_devices[ubi_num] = ubi;
ubi_notify_all(ubi, UBI_VOLUME_ADDED, NULL);
return ubi_num;
@@ -1090,7 +1056,6 @@ int ubi_detach_mtd_dev(int ubi_num, int anyway)
* Before freeing anything, we have to stop the background thread to
* prevent it from doing anything on this device while we are freeing.
*/
- unregister_reboot_notifier(&ubi->reboot_notifier);
if (ubi->bgt_thread)
kthread_stop(ubi->bgt_thread);
@@ -349,7 +349,6 @@ struct ubi_wl_entry;
* @bgt_thread: background thread description object
* @thread_enabled: if the background thread is enabled
* @bgt_name: background thread name
- * @reboot_notifier: notifier to terminate background thread before rebooting
*
* @flash_size: underlying MTD device size (in bytes)
* @peb_count: count of physical eraseblocks on the MTD device
@@ -435,7 +434,6 @@ struct ubi_device {
struct task_struct *bgt_thread;
int thread_enabled;
char bgt_name[sizeof(UBI_BGT_NAME_PATTERN)+2];
- struct notifier_block reboot_notifier;
/* I/O sub-system's stuff */
long long flash_size;
The UBI reboot notifier causes problems with hibernation. Move this functionality into the low-level MTD driver instead. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> --- drivers/mtd/ubi/build.c | 35 ----------------------------------- drivers/mtd/ubi/ubi.h | 2 -- 2 files changed, 0 insertions(+), 37 deletions(-)