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dma: edma: Fix memory leak in edma_prep_dma_cyclic() 

Fix a memory leak in the edma_prep_dma_cyclic() error handling path.

Signed-off-by: Christian Engelmayer <cengelma@gmx.at>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Christian Engelmayer 2013-12-30 20:48:39 +01:00 committed by Vinod Koul
parent 51455ec4f0
commit e3ddc97946
1 changed files with 4 additions and 1 deletions
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5
drivers/dma/edma.c
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@ -539,6 +539,7 @@ static struct dma_async_tx_descriptor *edma_prep_dma_cyclic(
edma_alloc_slot(EDMA_CTLR(echan->ch_num),
EDMA_SLOT_ANY);
if (echan->slot[i] < 0) {
kfree(edesc);
dev_err(dev, "Failed to allocate slot\n");
return NULL;
}
@ -553,8 +554,10 @@ static struct dma_async_tx_descriptor *edma_prep_dma_cyclic(
ret = edma_config_pset(chan, &edesc->pset[i], src_addr,
dst_addr, burst, dev_width, period_len,
direction);
if (ret < 0)
if (ret < 0) {
kfree(edesc);
return NULL;
}
if (direction == DMA_DEV_TO_MEM)
dst_addr += period_len;