[ath9k-devel] [PATCH 04/11] ath9k: introduce bus specific cleanup routine

[Gabor Juhos <juhosg@openwrt.org>]

Johannes Berg ?rta:
> On Wed, 2009-01-07 at 11:09 +0100, Gabor Juhos wrote:
> 
>>  			/* Deinitialize the device */
>> -			ath_detach(sc);
>> -			if (to_pci_dev(sc->dev)->irq)
>> -				free_irq(to_pci_dev(sc->dev)->irq, sc);
>> -			pci_iounmap(to_pci_dev(sc->dev), sc->mem);
>> -			pci_release_region(to_pci_dev(sc->dev), 0);
>> -			pci_disable_device(to_pci_dev(sc->dev));
>> -			ieee80211_free_hw(sc->hw);
>> +			ath_bus_cleanup(sc);
> 
> And how is ath_detach() or ieee80211_free_hw() bus specific? That should
> not be in the bus specific function.
> 
> johannes

You are right. I guess this looks better:

diff --git a/drivers/net/wireless/ath9k/core.h b/drivers/net/wireless/ath9k/core.h
index 8e93d11..f9fa5c6 100644
--- a/drivers/net/wireless/ath9k/core.h
+++ b/drivers/net/wireless/ath9k/core.h
@@ -695,6 +695,7 @@ enum PROT_MODE {
 
 struct ath_bus_ops {
 	void		(*read_cachesize)(struct ath_softc *sc, int *csz);
+	void		(*cleanup)(struct ath_softc *sc);
 };
 
 struct ath_softc {
@@ -704,6 +705,7 @@ struct ath_softc {
 	struct tasklet_struct bcon_tasklet;
 	struct ath_hal *sc_ah;
 	void __iomem *mem;
+	int irq;
 	spinlock_t sc_resetlock;
 	struct mutex mutex;
 
@@ -760,4 +762,9 @@ static inline void ath_read_cachesize(struct ath_softc *sc, int *csz)
 	sc->bus_ops->read_cachesize(sc, csz);
 }
 
+static inline void ath_bus_cleanup(struct ath_softc *sc)
+{
+	sc->bus_ops->cleanup(sc);
+}
+
 #endif /* CORE_H */
diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c
index 15824c1..349ac17 100644
--- a/drivers/net/wireless/ath9k/main.c
+++ b/drivers/net/wireless/ath9k/main.c
@@ -39,6 +39,7 @@ static struct pci_device_id ath_pci_id_table[] __devinitdata = {
 };
 
 static void ath_detach(struct ath_softc *sc);
+static void ath_cleanup(struct ath_softc *sc);
 
 /* return bus cachesize in 4B word units */
 
@@ -1267,13 +1268,7 @@ static int ath_start_rfkill_poll(struct ath_softc *sc)
 			rfkill_free(sc->rf_kill.rfkill);
 
 			/* Deinitialize the device */
-			ath_detach(sc);
-			if (to_pci_dev(sc->dev)->irq)
-				free_irq(to_pci_dev(sc->dev)->irq, sc);
-			pci_iounmap(to_pci_dev(sc->dev), sc->mem);
-			pci_release_region(to_pci_dev(sc->dev), 0);
-			pci_disable_device(to_pci_dev(sc->dev));
-			ieee80211_free_hw(sc->hw);
+			ath_cleanup(sc);
 			return -EIO;
 		} else {
 			sc->sc_flags |= SC_OP_RFKILL_REGISTERED;
@@ -1284,6 +1279,16 @@ static int ath_start_rfkill_poll(struct ath_softc *sc)
 }
 #endif /* CONFIG_RFKILL */
 
+static void ath_cleanup(struct ath_softc *sc)
+{
+	struct pci_dev *pdev = to_pci_dev(sc->dev);
+
+	ath_detach(sc);
+	free_irq(sc->irq, sc);
+	ath_bus_cleanup(sc);
+	ieee80211_free_hw(sc->hw);
+}
+
 static void ath_detach(struct ath_softc *sc)
 {
 	struct ieee80211_hw *hw = sc->hw;
@@ -2529,8 +2534,18 @@ ath_rf_name(u16 rf_version)
 	return "????";
 }
 
+static void ath_pci_cleanup(struct ath_softc *sc)
+{
+	struct pci_dev *pdev = to_pci_dev(sc->dev);
+
+	pci_iounmap(pdev, sc->mem);
+	pci_release_region(pdev, 0);
+	pci_disable_device(pdev);
+}
+
 static struct ath_bus_ops ath_pci_bus_ops = {
 	.read_cachesize = ath_pci_read_cachesize,
+	.cleanup = ath_pci_cleanup,
 };
 
 static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
@@ -2637,6 +2652,8 @@ static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 		goto bad4;
 	}
 
+	sc->irq = pdev->irq;
+
 	ah = sc->sc_ah;
 	printk(KERN_INFO
 	       "%s: Atheros AR%s MAC/BB Rev:%x "
@@ -2667,13 +2684,7 @@ static void ath_pci_remove(struct pci_dev *pdev)
 	struct ieee80211_hw *hw = pci_get_drvdata(pdev);
 	struct ath_softc *sc = hw->priv;
 
-	ath_detach(sc);
-	if (pdev->irq)
-		free_irq(pdev->irq, sc);
-	pci_iounmap(pdev, sc->mem);
-	pci_release_region(pdev, 0);
-	pci_disable_device(pdev);
-	ieee80211_free_hw(hw);
+	ath_cleanup(sc);
 }
 
 #ifdef CONFIG_PM