diff options
| author | Pavel Roskin <proski@gnu.org> | 2010-01-30 21:37:24 -0500 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-02-01 15:40:09 -0500 |
| commit | ab5132a26236e308c6d3d832a3e04fca351656d8 (patch) | |
| tree | db473e3bd020a5e2f3fe02a381bb24e7b285ab5e /drivers/net/wireless/ath/ath9k/pci.c | |
| parent | e389900ed31975f3ce091764bf394b045058dad1 (diff) | |
ath9k: fix access to freed data on unload
Calling ath_bus_cleanup() after ieee80211_free_hw() resulted in access
to common->bus_ops, which is already freed as part of the device data.
Remove the cleanup field in struct ath_bus_ops, as it was never used
properly. Remove ath_bus_cleanup(). Merge cleanup functions in place
of the ath_bus_cleanup() calls. Take care not to use any device data
after ieee80211_free_hw().
Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/pci.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/pci.c | 18 |
1 files changed, 5 insertions, 13 deletions
diff --git a/drivers/net/wireless/ath/ath9k/pci.c b/drivers/net/wireless/ath/ath9k/pci.c index 4ae7b5f1202..f2afcbefc07 100644 --- a/drivers/net/wireless/ath/ath9k/pci.c +++ b/drivers/net/wireless/ath/ath9k/pci.c @@ -49,16 +49,6 @@ static void ath_pci_read_cachesize(struct ath_common *common, int *csz) *csz = DEFAULT_CACHELINE >> 2; /* Use the default size */ } -static void ath_pci_cleanup(struct ath_common *common) -{ - struct ath_softc *sc = (struct ath_softc *) common->priv; - struct pci_dev *pdev = to_pci_dev(sc->dev); - - pci_iounmap(pdev, sc->mem); - pci_disable_device(pdev); - pci_release_region(pdev, 0); -} - static bool ath_pci_eeprom_read(struct ath_common *common, u32 off, u16 *data) { struct ath_hw *ah = (struct ath_hw *) common->ah; @@ -98,7 +88,6 @@ static void ath_pci_bt_coex_prep(struct ath_common *common) static const struct ath_bus_ops ath_pci_bus_ops = { .read_cachesize = ath_pci_read_cachesize, - .cleanup = ath_pci_cleanup, .eeprom_read = ath_pci_eeprom_read, .bt_coex_prep = ath_pci_bt_coex_prep, }; @@ -245,12 +234,15 @@ static void ath_pci_remove(struct pci_dev *pdev) struct ieee80211_hw *hw = pci_get_drvdata(pdev); struct ath_wiphy *aphy = hw->priv; struct ath_softc *sc = aphy->sc; - struct ath_common *common = ath9k_hw_common(sc->sc_ah); + void __iomem *mem = sc->mem; ath9k_deinit_device(sc); free_irq(sc->irq, sc); ieee80211_free_hw(sc->hw); - ath_bus_cleanup(common); + + pci_iounmap(pdev, mem); + pci_disable_device(pdev); + pci_release_region(pdev, 0); } #ifdef CONFIG_PM |