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authorStefan Agner <stefan@agner.ch>2014-11-13 14:56:02 +0300
committerVinod Koul <vinod.koul@intel.com>2014-12-08 16:13:44 +0300
commit6ab55b214c625f4d56199f7ebd0b419f43f23bb2 (patch)
tree9e39cfa4e87e89e9f68be04702b3eb261b76f742 /drivers
parent345e3123d112600b55f1d43124f2e977ee83d0cc (diff)
downloadlinux-6ab55b214c625f4d56199f7ebd0b419f43f23bb2.tar.xz
dmaengine: fsl-edma: fix calculation of remaining bytes
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/dma/fsl-edma.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/fsl-edma.c b/drivers/dma/fsl-edma.c
index 3c5711d5fe97..58c6fc7e902e 100644
--- a/drivers/dma/fsl-edma.c
+++ b/drivers/dma/fsl-edma.c
@@ -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;
}