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[PATCH] pcmcia: new suspend core

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Move the suspend and resume methods out of the event handler, and into
special functions. Also use these functions for pre- and post-reset, as
almost all drivers already do, and the remaining ones can easily be
converted.

Bugfix to include/pcmcia/ds.c
Signed-off-by: Andrew Morton <akpm@osdl.org>

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
This commit is contained in:
Dominik Brodowski
2005-11-14 21:21:18 +01:00
parent 63e7ebd064
commit 98e4c28b7e
45 changed files with 1434 additions and 994 deletions
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145
drivers/net/wireless/orinoco_cs.c
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@@ -465,6 +465,83 @@ orinoco_cs_release(dev_link_t *link)
ioport_unmap(priv->hw.iobase);
} /* orinoco_cs_release */
static int orinoco_cs_suspend(struct pcmcia_device *p_dev)
{
dev_link_t *link = dev_to_instance(p_dev);
struct net_device *dev = link->priv;
struct orinoco_private *priv = netdev_priv(dev);
struct orinoco_pccard *card = priv->card;
int err = 0;
unsigned long flags;
link->state |= DEV_SUSPEND;
if (link->state & DEV_CONFIG) {
/* This is probably racy, but I can't think of
a better way, short of rewriting the PCMCIA
layer to not suck :-( */
if (! test_bit(0, &card->hard_reset_in_progress)) {
spin_lock_irqsave(&priv->lock, flags);
err = __orinoco_down(dev);
if (err)
printk(KERN_WARNING "%s: Error %d downing interface\n",
dev->name, err);
netif_device_detach(dev);
priv->hw_unavailable++;
spin_unlock_irqrestore(&priv->lock, flags);
}
pcmcia_release_configuration(link->handle);
}
return 0;
}
static int orinoco_cs_resume(struct pcmcia_device *p_dev)
{
dev_link_t *link = dev_to_instance(p_dev);
struct net_device *dev = link->priv;
struct orinoco_private *priv = netdev_priv(dev);
struct orinoco_pccard *card = priv->card;
int err = 0;
unsigned long flags;
link->state &= ~DEV_SUSPEND;
if (link->state & DEV_CONFIG) {
/* FIXME: should we double check that this is
* the same card as we had before */
pcmcia_request_configuration(link->handle, &link->conf);
if (! test_bit(0, &card->hard_reset_in_progress)) {
err = orinoco_reinit_firmware(dev);
if (err) {
printk(KERN_ERR "%s: Error %d re-initializing firmware\n",
dev->name, err);
return -EIO;
}
spin_lock_irqsave(&priv->lock, flags);
netif_device_attach(dev);
priv->hw_unavailable--;
if (priv->open && ! priv->hw_unavailable) {
err = __orinoco_up(dev);
if (err)
printk(KERN_ERR "%s: Error %d restarting card\n",
dev->name, err);
}
spin_unlock_irqrestore(&priv->lock, flags);
}
}
return 0;
}
/*
* The card status event handler. Mostly, this schedules other stuff
* to run after an event is received.
@@ -476,9 +553,7 @@ orinoco_cs_event(event_t event, int priority,
dev_link_t *link = args->client_data;
struct net_device *dev = link->priv;
struct orinoco_private *priv = netdev_priv(dev);
struct orinoco_pccard *card = priv->card;
int err = 0;
unsigned long flags;
switch (event) {
case CS_EVENT_CARD_REMOVAL:
@@ -497,70 +572,6 @@ orinoco_cs_event(event_t event, int priority,
link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
orinoco_cs_config(link);
break;
case CS_EVENT_PM_SUSPEND:
link->state |= DEV_SUSPEND;
/* Fall through... */
case CS_EVENT_RESET_PHYSICAL:
/* Mark the device as stopped, to block IO until later */
if (link->state & DEV_CONFIG) {
/* This is probably racy, but I can't think of
a better way, short of rewriting the PCMCIA
layer to not suck :-( */
if (! test_bit(0, &card->hard_reset_in_progress)) {
spin_lock_irqsave(&priv->lock, flags);
err = __orinoco_down(dev);
if (err)
printk(KERN_WARNING "%s: %s: Error %d downing interface\n",
dev->name,
event == CS_EVENT_PM_SUSPEND ? "SUSPEND" : "RESET_PHYSICAL",
err);
netif_device_detach(dev);
priv->hw_unavailable++;
spin_unlock_irqrestore(&priv->lock, flags);
}
pcmcia_release_configuration(link->handle);
}
break;
case CS_EVENT_PM_RESUME:
link->state &= ~DEV_SUSPEND;
/* Fall through... */
case CS_EVENT_CARD_RESET:
if (link->state & DEV_CONFIG) {
/* FIXME: should we double check that this is
* the same card as we had before */
pcmcia_request_configuration(link->handle, &link->conf);
if (! test_bit(0, &card->hard_reset_in_progress)) {
err = orinoco_reinit_firmware(dev);
if (err) {
printk(KERN_ERR "%s: Error %d re-initializing firmware\n",
dev->name, err);
break;
}
spin_lock_irqsave(&priv->lock, flags);
netif_device_attach(dev);
priv->hw_unavailable--;
if (priv->open && ! priv->hw_unavailable) {
err = __orinoco_up(dev);
if (err)
printk(KERN_ERR "%s: Error %d restarting card\n",
dev->name, err);
}
spin_unlock_irqrestore(&priv->lock, flags);
}
}
break;
}
return err;
@@ -669,6 +680,8 @@ static struct pcmcia_driver orinoco_driver = {
.detach = orinoco_cs_detach,
.event = orinoco_cs_event,
.id_table = orinoco_cs_ids,
.suspend = orinoco_cs_suspend,
.resume = orinoco_cs_resume,
};
static int __init