Commit 6b0d9a84 authored Nov 17, 2009 by Li Yang Committed by David Woodhouse Nov 30, 2009

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>

parent 4a589486

drivers/mtd/nand/nand_base.c

+8 −2

Original line number	Diff line number	Diff line
		@@ -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) {
		if (chip->controller->active->state == FL_PM_SUSPENDED) {
		chip->state = FL_PM_SUSPENDED;
		spin_unlock(lock);
		return (chip->state == FL_PM_SUSPENDED) ? 0 : -EAGAIN;
		return 0;
		} else {
		spin_unlock(lock);
		return -EAGAIN;
		}
		}
		set_current_state(TASK_UNINTERRUPTIBLE);
		add_wait_queue(wq, &wait);