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ath9k: Check for pci_map_single() errors

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pci_map_single() can fail so detect those errors with
pci_dma_mapping_error() and deal with them accordingly.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Luis R. Rodriguez
2008-12-03 03:35:29 -08:00
committed by John W. Linville
parent 73a5267087
commit f8316df10c
3 changed files with 53 additions and 3 deletions
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17
drivers/net/wireless/ath9k/recv.c
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@@ -304,6 +304,15 @@ int ath_rx_init(struct ath_softc *sc, int nbufs)
bf->bf_buf_addr = pci_map_single(sc->pdev, skb->data,
sc->sc_rxbufsize,
PCI_DMA_FROMDEVICE);
if (unlikely(pci_dma_mapping_error(sc->pdev,
bf->bf_buf_addr))) {
dev_kfree_skb_any(skb);
bf->bf_mpdu = NULL;
DPRINTF(sc, ATH_DBG_CONFIG,
"pci_dma_mapping_error() on RX init\n");
error = -ENOMEM;
break;
}
bf->bf_dmacontext = bf->bf_buf_addr;
}
sc->sc_rxlink = NULL;
@@ -589,6 +598,14 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush)
bf->bf_buf_addr = pci_map_single(sc->pdev, requeue_skb->data,
sc->sc_rxbufsize,
PCI_DMA_FROMDEVICE);
if (unlikely(pci_dma_mapping_error(sc->pdev,
bf->bf_buf_addr))) {
dev_kfree_skb_any(requeue_skb);
bf->bf_mpdu = NULL;
DPRINTF(sc, ATH_DBG_CONFIG,
"pci_dma_mapping_error() on RX\n");
break;
}
bf->bf_dmacontext = bf->bf_buf_addr;
/*