From 49ef3c6ee11e221b26caf4ac55c2702a37cca103 Mon Sep 17 00:00:00 2001
From: Maxim Levitsky <maximlevitsky@gmail.com>
Date: Mon, 22 Feb 2010 20:39:34 +0200
Subject: [PATCH] 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>
---
drivers/mtd/nand/nand_base.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index ed62e1ee0f81..7442b3a29b25 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);
--
2.34.1