mtd: nand: make suspend work if device is accessed by kernel threads.

Since all userspace threads are frozen at the time the nand_suspend is called,
they aren't inside any nand function.

We don't call try_to_freeze in nand ether. Thus the only user that can 
be inside the nand functions is an non freezeable kernel thread. Thus we 
can safely wait for it to finish.

Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 0 insertions, 3 deletions

diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index ed62e1ee0f8..7442b3a29b2 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -773,9 +773,6 @@ nand_get_device(struct nand_chip *chip, struct mtd_info *mtd, int new_state)
                         chip->state = FL_PM_SUSPENDED;
                         spin_unlock(lock);
                         return 0;
-                } else {
-                        spin_unlock(lock);
-                        return -EAGAIN;
                 }
         }
         set_current_state(TASK_UNINTERRUPTIBLE);