mtd: r852: remove useless pci powerup/down from suspend/resume routines
It turns out that pci core now handles these, so this code is redundant
and can even cause bugs
Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/drivers/mtd/nand/r852.c b/drivers/mtd/nand/r852.c
index 5169ca6..d9d7efb 100644
--- a/drivers/mtd/nand/r852.c
+++ b/drivers/mtd/nand/r852.c
@@ -757,11 +757,6 @@
spin_lock_irqsave(&dev->irqlock, flags);
- /* We can recieve shared interrupt while pci is suspended
- in that case reads will return 0xFFFFFFFF.... */
- if (dev->insuspend)
- goto out;
-
/* handle card detection interrupts first */
card_status = r852_read_reg(dev, R852_CARD_IRQ_STA);
r852_write_reg(dev, R852_CARD_IRQ_STA, card_status);
@@ -1035,7 +1030,6 @@
int r852_suspend(struct device *device)
{
struct r852_device *dev = pci_get_drvdata(to_pci_dev(device));
- unsigned long flags;
if (dev->ctlreg & R852_CTL_CARDENABLE)
return -EBUSY;
@@ -1047,43 +1041,22 @@
r852_disable_irqs(dev);
r852_engine_disable(dev);
- spin_lock_irqsave(&dev->irqlock, flags);
- dev->insuspend = 1;
- spin_unlock_irqrestore(&dev->irqlock, flags);
-
- /* At that point, even if interrupt handler is running, it will quit */
- /* So wait for this to happen explictly */
- synchronize_irq(dev->irq);
-
/* If card was pulled off just during the suspend, which is very
unlikely, we will remove it on resume, it too late now
anyway... */
dev->card_unstable = 0;
-
- pci_save_state(to_pci_dev(device));
- return pci_prepare_to_sleep(to_pci_dev(device));
+ return 0;
}
int r852_resume(struct device *device)
{
struct r852_device *dev = pci_get_drvdata(to_pci_dev(device));
- unsigned long flags;
-
- /* Turn on the hardware */
- pci_back_from_sleep(to_pci_dev(device));
- pci_restore_state(to_pci_dev(device));
r852_disable_irqs(dev);
r852_card_update_present(dev);
r852_engine_disable(dev);
- /* Now its safe for IRQ to run */
- spin_lock_irqsave(&dev->irqlock, flags);
- dev->insuspend = 0;
- spin_unlock_irqrestore(&dev->irqlock, flags);
-
-
/* If card status changed, just do the work */
if (dev->card_detected != dev->card_registred) {
dbg("card was %s during low power state",
@@ -1121,7 +1094,6 @@
SIMPLE_DEV_PM_OPS(r852_pm_ops, r852_suspend, r852_resume);
-
static struct pci_driver r852_pci_driver = {
.name = DRV_NAME,
.id_table = r852_pci_id_tbl,