diff options
| author | Li Yang <leoli@freescale.com> | 2009-11-17 14:45:49 -0800 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2009-11-30 11:41:24 +0000 |
| commit | 6b0d9a84124937f048bcb8b21313152b23063978 (patch) | |
| tree | b9105470cab89331af398c1554858cb69706e23a /drivers/mtd/nand/nand_base.c | |
| parent | 4a58948669702639db7acecfa2105c3172d85c93 (diff) | |
| download | lwn-6b0d9a84124937f048bcb8b21313152b23063978.tar.gz lwn-6b0d9a84124937f048bcb8b21313152b23063978.zip | |
mtd: nand: fix multi-chip suspend problem
Symptom:
device_suspend(): mtd_cls_suspend+0x0/0x58 returns -11
PM: Device mtd14 failed to suspend: error -11
PM: Some devices failed to suspend
This patch enables other chips to be suspended if the active chip of
the controller has been suspended.
Signed-off-by: Jin Qing <b24347@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd/nand/nand_base.c')
| -rw-r--r-- | drivers/mtd/nand/nand_base.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 724cb2c9ad3f..8f2958fe2148 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -740,8 +740,14 @@ nand_get_device(struct nand_chip *chip, struct mtd_info *mtd, int new_state) return 0; } if (new_state == FL_PM_SUSPENDED) { - spin_unlock(lock); - return (chip->state == FL_PM_SUSPENDED) ? 0 : -EAGAIN; + if (chip->controller->active->state == FL_PM_SUSPENDED) { + chip->state = FL_PM_SUSPENDED; + spin_unlock(lock); + return 0; + } else { + spin_unlock(lock); + return -EAGAIN; + } } set_current_state(TASK_UNINTERRUPTIBLE); add_wait_queue(wq, &wait); |