Re: [patch] do not allow IPW_2100=Y or IPW_2200=Y

[Pavel Machek]

On Mon 2006-07-10 23:05:06, Michael Buesch wrote:
> On Monday 10 July 2006 19:53, you wrote:
> > Pavel Machek wrote:
> > > Kconfig currently allows compiling IPW_2100 and IPW_2200 into kernel
> > > (not as a module). Unfortunately, such configuration does not work,
> > > because these drivers need a firmware, and it can't be loaded by
> > > userspace loader when userspace is not running.
> > 
> > False, initramfs...
> 
> Does the ipw driver _really_ need the firmware on insmod time?
> bcm43xx, for example, loads the firmware on "ifconfig up" time.
> If ipw really needs the firmware on insmod, is it possible to
> defer it to later at "ifconfig up" time?

Probably not. This (very dirty) hack implements that (with some level
of success -- ifconfig down/ifconfig up is enough to get wireless
working).

Signed-off-by: Pavel Machek <pavel@xxxxxxx>

									Pavel

--- clean-mm/drivers/net/wireless/ipw2200.c	2006-07-11 15:22:50.000000000 +0200
+++ linux-mm/drivers/net/wireless/ipw2200.c	2006-07-11 14:38:01.000000000 +0200
@@ -97,6 +97,7 @@
 static int bt_coexist = 0;
 static int hwcrypto = 0;
 static int roaming = 1;
+static int needs_reinit = 1;
 static const char ipw_modes[] = {
 	'a', 'b', 'g', '?'
 };
@@ -10013,10 +10014,20 @@
 	sys_config->silence_threshold = 0x1e;
 }
 
+static int ipw_pci_suspend(struct pci_dev *pdev, pm_message_t state);
+static int ipw_pci_resume(struct pci_dev *pdev);
+
 static int ipw_net_open(struct net_device *dev)
 {
 	struct ipw_priv *priv = ieee80211_priv(dev);
 	IPW_DEBUG_INFO("dev->open\n");
+
+	if (needs_reinit) {
+		printk("ipw: Delayed loading the firmware\n");
+		ipw_pci_suspend(priv->pci_dev, PMSG_FREEZE);
+		ipw_pci_resume(priv->pci_dev);
+	}
+
 	/* we should be verifying the device is ready to be opened */
 	mutex_lock(&priv->mutex);
 	if (!(priv->status & STATUS_RF_KILL_MASK) &&
@@ -11295,7 +11306,8 @@
 
 	if (ipw_up(priv)) {
 		mutex_unlock(&priv->mutex);
-		return -EIO;
+		needs_reinit = 1;
+		return 0;
 	}
 
 	mutex_unlock(&priv->mutex);


-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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