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ath5k: reset more pointers after we free skbs 

After we free skbs for receive or transmit descriptors, make sure we have no
pointers to the now invalid memory address.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Acked-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Bruno Randolf 2010-06-16 19:11:41 +09:00 committed by John W. Linville
parent 0452d4a508
commit 39d63f2a3f
1 changed files with 7 additions and 0 deletions
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7
drivers/net/wireless/ath/ath5k/base.c
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@ -322,6 +322,8 @@ static inline void ath5k_txbuf_free_skb(struct ath5k_softc *sc,
PCI_DMA_TODEVICE); PCI_DMA_TODEVICE);
dev_kfree_skb_any(bf->skb); dev_kfree_skb_any(bf->skb);
bf->skb = NULL; bf->skb = NULL;
bf->skbaddr = 0;
bf->desc->ds_data = 0;
} }
static inline void ath5k_rxbuf_free_skb(struct ath5k_softc *sc, static inline void ath5k_rxbuf_free_skb(struct ath5k_softc *sc,
@ -337,6 +339,8 @@ static inline void ath5k_rxbuf_free_skb(struct ath5k_softc *sc,
PCI_DMA_FROMDEVICE); PCI_DMA_FROMDEVICE);
dev_kfree_skb_any(bf->skb); dev_kfree_skb_any(bf->skb);
bf->skb = NULL; bf->skb = NULL;
bf->skbaddr = 0;
bf->desc->ds_data = 0;
} }
@ -1455,9 +1459,12 @@ ath5k_desc_free(struct ath5k_softc *sc, struct pci_dev *pdev)
/* Free memory associated with all descriptors */ /* Free memory associated with all descriptors */
pci_free_consistent(pdev, sc->desc_len, sc->desc, sc->desc_daddr); pci_free_consistent(pdev, sc->desc_len, sc->desc, sc->desc_daddr);
sc->desc = NULL;
sc->desc_daddr = 0;
kfree(sc->bufptr); kfree(sc->bufptr);
sc->bufptr = NULL; sc->bufptr = NULL;
sc->bbuf = NULL;
} }