Messages in this thread Patch in this message | | | Date | Tue, 26 Jul 2011 20:43:54 +0800 | Subject | [RFC patch] DMAengine/Langwell: put tx descriptor in error path | From | Hillf Danton <> |
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When preparing LLI based periphral transfer, if error encountered, the newly prepared tx descriptor should be put for later recycling.
Signed-off-by: Hillf Danton <dhillf@gmail.com> --- drivers/dma/intel_mid_dma.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/dma/intel_mid_dma.c b/drivers/dma/intel_mid_dma.c index f653517..b78a65a 100644 --- a/drivers/dma/intel_mid_dma.c +++ b/drivers/dma/intel_mid_dma.c @@ -793,6 +793,7 @@ static struct dma_async_tx_descriptor *intel_mid_dma_prep_slave_sg( 32, 0); if (NULL == desc->lli_pool) { pr_err("MID_DMA:LLI pool create failed\n"); + midc_desc_put(midc, desc); return NULL; }
@@ -800,6 +801,7 @@ static struct dma_async_tx_descriptor *intel_mid_dma_prep_slave_sg( if (!desc->lli) { pr_err("MID_DMA: LLI alloc failed\n"); pci_pool_destroy(desc->lli_pool); + midc_desc_put(midc, desc); return NULL; }
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