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 <b...@einfach.org>
---
drivers/net/wireless/ath/ath5k/base.c | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/ath/ath5k/base.c
b/drivers/net/wireless/ath/ath5k/base.c
index 2d15125..7e14eb6 100644
--- a/drivers/net/wireless/ath/ath5k/base.c
+++ b/drivers/net/wireless/ath/ath5k/base.c
@@ -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;
}
@@ -1457,9 +1461,12 @@ 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;
}
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