From 14bd076955f4e9cb911326d1b7291e3a2b40bdec Mon Sep 17 00:00:00 2001 From: Sebastian Siewior Date: Thu, 20 Jun 2013 16:58:45 +0200 Subject: 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 Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/davinci_cpdma.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/net/ethernet/ti') diff --git a/drivers/net/ethernet/ti/davinci_cpdma.c b/drivers/net/ethernet/ti/davinci_cpdma.c index 49dfd592ac1e..053c84fd0853 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); -- cgit v1.2.1