[PATCH 12/17] MTD: nand: make suspend work if device is accessed by kernel threads.
in [Kernel]
|
Prev: [PATCH V5] Work to enable SmartMedia/xD support
Next: Regressionhung task during raid rebuild 2.6.33 rc5 was: Re: 2.6.33RC3 hung task - jbd2/dm-1-8 (during raid rebuild)
From: Maxim Levitsky on 30 Jan 2010 10:10 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 insize the nand functions is an non freezeable kernel thread. Thus we can safely wait for it to finish. Signed-off-by: Maxim Levitsky <maximlevitsky(a)gmail.com> --- drivers/mtd/nand/nand_base.c | 3 --- 1 files changed, 0 insertions(+), 3 deletions(-) diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 29e986e..961c98f 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -744,9 +744,6 @@ 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); -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |