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Commit 39d63f2a authored by Bruno Randolf's avatar Bruno Randolf Committed by John W. Linville
Browse files

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: default avatarBruno Randolf <br1@einfach.org>
Acked-by: default avatarBob Copeland <me@bobcopeland.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 0452d4a5

drivers/net/wireless/ath/ath5k/base.c

+7 −0
Original line number Diff line number Diff line
@@ -322,6 +322,8 @@ static inline void ath5k_txbuf_free_skb(struct ath5k_softc *sc, 
			PCI_DMA_TODEVICE);

	dev_kfree_skb_any(bf->skb);

	bf->skb = NULL;

	bf->skbaddr = 0;

	bf->desc->ds_data = 0;

}



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);

	dev_kfree_skb_any(bf->skb);

	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 */

	pci_free_consistent(pdev, sc->desc_len, sc->desc, sc->desc_daddr);

	sc->desc = NULL;

	sc->desc_daddr = 0;



	kfree(sc->bufptr);

	sc->bufptr = NULL;

	sc->bbuf = NULL;

}