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dmaengine: fsl-edma: fix calculation of remaining bytes

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If the current transfer control descriptor (TCD) was not yet started,
the address will be the same as the initial address. Hence test if the
current address is less than or equal to the start address of each TCD.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Stefan Agner 2014-11-13 12:56:02 +01:00 committed by Vinod Koul
parent 345e3123d1
commit 6ab55b214c
1 changed files with 1 additions and 1 deletions
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2
drivers/dma/fsl-edma.c
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@ -386,7 +386,7 @@ static size_t fsl_edma_desc_residue(struct fsl_edma_chan *fsl_chan,
&(edesc->tcd[i].vtcd->daddr));
len -= size;
if (cur_addr > dma_addr && cur_addr < dma_addr + size) {
if (cur_addr >= dma_addr && cur_addr < dma_addr + size) {
len += dma_addr + size - cur_addr;
break;
}