1 files changed, 90 insertions, 71 deletions

diff --git a/drivers/net/wireless/p54/p54pci.c b/drivers/net/wireless/p54/p54pci.c
index b1f51a21579..d411de40905 100644
--- a/drivers/net/wireless/p54/p54pci.c
+++ b/drivers/net/wireless/p54/p54pci.c
@@ -13,7 +13,6 @@
  * published by the Free Software Foundation.
  */
 
-#include <linux/init.h>
 #include <linux/pci.h>
 #include <linux/slab.h>
 #include <linux/firmware.h>
@@ -488,7 +487,59 @@ static int p54p_open(struct ieee80211_hw *dev)
 	return 0;
 }
 
-static int __devinit p54p_probe(struct pci_dev *pdev,
+static void p54p_firmware_step2(const struct firmware *fw,
+				void *context)
+{
+	struct p54p_priv *priv = context;
+	struct ieee80211_hw *dev = priv->common.hw;
+	struct pci_dev *pdev = priv->pdev;
+	int err;
+
+	if (!fw) {
+		dev_err(&pdev->dev, "Cannot find firmware (isl3886pci)\n");
+		err = -ENOENT;
+		goto out;
+	}
+
+	priv->firmware = fw;
+
+	err = p54p_open(dev);
+	if (err)
+		goto out;
+	err = p54_read_eeprom(dev);
+	p54p_stop(dev);
+	if (err)
+		goto out;
+
+	err = p54_register_common(dev, &pdev->dev);
+	if (err)
+		goto out;
+
+out:
+
+	complete(&priv->fw_loaded);
+
+	if (err) {
+		struct device *parent = pdev->dev.parent;
+
+		if (parent)
+			device_lock(parent);
+
+		/*
+		 * This will indirectly result in a call to p54p_remove.
+		 * Hence, we don't need to bother with freeing any
+		 * allocated ressources at all.
+		 */
+		device_release_driver(&pdev->dev);
+
+		if (parent)
+			device_unlock(parent);
+	}
+
+	pci_dev_put(pdev);
+}
+
+static int p54p_probe(struct pci_dev *pdev,
 				const struct pci_device_id *id)
 {
 	struct p54p_priv *priv;
@@ -496,6 +547,7 @@ static int __devinit p54p_probe(struct pci_dev *pdev,
 	unsigned long mem_addr, mem_len;
 	int err;
 
+	pci_dev_get(pdev);
 	err = pci_enable_device(pdev);
 	if (err) {
 		dev_err(&pdev->dev, "Cannot enable new PCI device\n");
@@ -506,6 +558,7 @@ static int __devinit p54p_probe(struct pci_dev *pdev,
 	mem_len = pci_resource_len(pdev, 0);
 	if (mem_len < sizeof(struct p54p_csr)) {
 		dev_err(&pdev->dev, "Too short PCI resources\n");
+		err = -ENODEV;
 		goto err_disable_dev;
 	}
 
@@ -515,8 +568,10 @@ static int __devinit p54p_probe(struct pci_dev *pdev,
 		goto err_disable_dev;
 	}
 
-	if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) ||
-	    pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
+	err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+	if (!err)
+		err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+	if (err) {
 		dev_err(&pdev->dev, "No suitable DMA available\n");
 		goto err_free_reg;
 	}
@@ -537,6 +592,7 @@ static int __devinit p54p_probe(struct pci_dev *pdev,
 	priv = dev->priv;
 	priv->pdev = pdev;
 
+	init_completion(&priv->fw_loaded);
 	SET_IEEE80211_DEV(dev, &pdev->dev);
 	pci_set_drvdata(pdev, dev);
 
@@ -561,32 +617,12 @@ static int __devinit p54p_probe(struct pci_dev *pdev,
 	spin_lock_init(&priv->lock);
 	tasklet_init(&priv->tasklet, p54p_tasklet, (unsigned long)dev);
 
-	err = request_firmware(&priv->firmware, "isl3886pci",
-			       &priv->pdev->dev);
-	if (err) {
-		dev_err(&pdev->dev, "Cannot find firmware (isl3886pci)\n");
-		err = request_firmware(&priv->firmware, "isl3886",
-				       &priv->pdev->dev);
-		if (err)
-			goto err_free_common;
-	}
-
-	err = p54p_open(dev);
-	if (err)
-		goto err_free_common;
-	err = p54_read_eeprom(dev);
-	p54p_stop(dev);
-	if (err)
-		goto err_free_common;
-
-	err = p54_register_common(dev, &pdev->dev);
-	if (err)
-		goto err_free_common;
-
-	return 0;
+	err = request_firmware_nowait(THIS_MODULE, 1, "isl3886pci",
+				      &priv->pdev->dev, GFP_KERNEL,
+				      priv, p54p_firmware_step2);
+	if (!err)
+		return 0;
 
- err_free_common:
-	release_firmware(priv->firmware);
 	pci_free_consistent(pdev, sizeof(*priv->ring_control),
 			    priv->ring_control, priv->ring_control_dma);
 
@@ -594,17 +630,17 @@ static int __devinit p54p_probe(struct pci_dev *pdev,
 	iounmap(priv->map);
 
  err_free_dev:
-	pci_set_drvdata(pdev, NULL);
 	p54_free_common(dev);
 
  err_free_reg:
 	pci_release_regions(pdev);
  err_disable_dev:
 	pci_disable_device(pdev);
+	pci_dev_put(pdev);
 	return err;
 }
 
-static void __devexit p54p_remove(struct pci_dev *pdev)
+static void p54p_remove(struct pci_dev *pdev)
 {
 	struct ieee80211_hw *dev = pci_get_drvdata(pdev);
 	struct p54p_priv *priv;
@@ -612,8 +648,9 @@ static void __devexit p54p_remove(struct pci_dev *pdev)
 	if (!dev)
 		return;
 
-	p54_unregister_common(dev);
 	priv = dev->priv;
+	wait_for_completion(&priv->fw_loaded);
+	p54_unregister_common(dev);
 	release_firmware(priv->firmware);
 	pci_free_consistent(pdev, sizeof(*priv->ring_control),
 			    priv->ring_control, priv->ring_control_dma);
@@ -623,59 +660,41 @@ static void __devexit p54p_remove(struct pci_dev *pdev)
 	p54_free_common(dev);
 }
 
-#ifdef CONFIG_PM
-static int p54p_suspend(struct pci_dev *pdev, pm_message_t state)
+#ifdef CONFIG_PM_SLEEP
+static int p54p_suspend(struct device *device)
 {
-	struct ieee80211_hw *dev = pci_get_drvdata(pdev);
-	struct p54p_priv *priv = dev->priv;
-
-	if (priv->common.mode != NL80211_IFTYPE_UNSPECIFIED) {
-		ieee80211_stop_queues(dev);
-		p54p_stop(dev);
-	}
+	struct pci_dev *pdev = to_pci_dev(device);
 
 	pci_save_state(pdev);
-	pci_set_power_state(pdev, pci_choose_state(pdev, state));
+	pci_set_power_state(pdev, PCI_D3hot);
+	pci_disable_device(pdev);
 	return 0;
 }
 
-static int p54p_resume(struct pci_dev *pdev)
+static int p54p_resume(struct device *device)
 {
-	struct ieee80211_hw *dev = pci_get_drvdata(pdev);
-	struct p54p_priv *priv = dev->priv;
+	struct pci_dev *pdev = to_pci_dev(device);
+	int err;
 
-	pci_set_power_state(pdev, PCI_D0);
-	pci_restore_state(pdev);
+	err = pci_reenable_device(pdev);
+	if (err)
+		return err;
+	return pci_set_power_state(pdev, PCI_D0);
+}
 
-	if (priv->common.mode != NL80211_IFTYPE_UNSPECIFIED) {
-		p54p_open(dev);
-		ieee80211_wake_queues(dev);
-	}
+static SIMPLE_DEV_PM_OPS(p54pci_pm_ops, p54p_suspend, p54p_resume);
 
-	return 0;
-}
-#endif /* CONFIG_PM */
+#define P54P_PM_OPS (&p54pci_pm_ops)
+#else
+#define P54P_PM_OPS (NULL)
+#endif /* CONFIG_PM_SLEEP */
 
 static struct pci_driver p54p_driver = {
 	.name		= "p54pci",
 	.id_table	= p54p_table,
 	.probe		= p54p_probe,
-	.remove		= __devexit_p(p54p_remove),
-#ifdef CONFIG_PM
-	.suspend	= p54p_suspend,
-	.resume		= p54p_resume,
-#endif /* CONFIG_PM */
+	.remove		= p54p_remove,
+	.driver.pm	= P54P_PM_OPS,
 };
 
-static int __init p54p_init(void)
-{
-	return pci_register_driver(&p54p_driver);
-}
-
-static void __exit p54p_exit(void)
-{
-	pci_unregister_driver(&p54p_driver);
-}
-
-module_init(p54p_init);
-module_exit(p54p_exit);
+module_pci_driver(p54p_driver);