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| author | Sebastian Siewior <bigeasy@linutronix.de> | 2013-06-20 16:58:45 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-06-24 00:07:30 -0700 |
| commit | 14bd076955f4e9cb911326d1b7291e3a2b40bdec (patch) | |
| tree | 13ebc4335959adc0abe2ea414a77107c8a0acbe7 /drivers/net/ethernet/ti/davinci_cpdma.c | |
| parent | db4e9b2b98bac7adc7657ef94bb6d1a419a35571 (diff) | |
| download | op-kernel-dev-14bd076955f4e9cb911326d1b7291e3a2b40bdec.zip op-kernel-dev-14bd076955f4e9cb911326d1b7291e3a2b40bdec.tar.gz | |
net: eth: davicnci_cpdma: check dma map error
Since the DMA mapping may fail the caller should check the return value.
Cc: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/ti/davinci_cpdma.c')
| -rw-r--r-- | drivers/net/ethernet/ti/davinci_cpdma.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/ethernet/ti/davinci_cpdma.c b/drivers/net/ethernet/ti/davinci_cpdma.c index 49dfd592..053c84f 100644 --- a/drivers/net/ethernet/ti/davinci_cpdma.c +++ b/drivers/net/ethernet/ti/davinci_cpdma.c @@ -705,6 +705,13 @@ int cpdma_chan_submit(struct cpdma_chan *chan, void *token, void *data, } buffer = dma_map_single(ctlr->dev, data, len, chan->dir); + ret = dma_mapping_error(ctlr->dev, buffer); + if (ret) { + cpdma_desc_free(ctlr->pool, desc, 1); + ret = -EINVAL; + goto unlock_ret; + } + mode = CPDMA_DESC_OWNER | CPDMA_DESC_SOP | CPDMA_DESC_EOP; cpdma_desc_to_port(chan, mode, directed); |
