diff options
| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2023-11-30 12:13:12 +0100 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-12-21 17:21:27 +0100 |
| commit | 26ee018ff6d1c326ac9b9be36513e35870ed09db (patch) | |
| tree | e573c9925489bc35d3bf74c0e4277afe18c419f7 | |
| parent | dmaengine: idxd: Move dma_free_coherent() out of spinlocked context (diff) | |
| download | linux-26ee018ff6d1c326ac9b9be36513e35870ed09db.tar.xz linux-26ee018ff6d1c326ac9b9be36513e35870ed09db.zip | |
dmaengine: xilinx: xdma: Fix the count of elapsed periods in cyclic mode
Xilinx DMA engine is capable of keeping track of the number of elapsed
periods and this is an increasing 32-bit counter which is only reset
when turning off the engine. No need to add this value to our local
counter.
Fixes: cd8c732ce1a5 ("dmaengine: xilinx: xdma: Support cyclic transfers")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20231130111315.729430-2-miquel.raynal@bootlin.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
| -rw-r--r-- | drivers/dma/xilinx/xdma.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/dma/xilinx/xdma.c b/drivers/dma/xilinx/xdma.c index 84a88029226f..2c9c72d4b5a2 100644 --- a/drivers/dma/xilinx/xdma.c +++ b/drivers/dma/xilinx/xdma.c @@ -754,9 +754,9 @@ static irqreturn_t xdma_channel_isr(int irq, void *dev_id) if (ret) goto out; - desc->completed_desc_num += complete_desc_num; - if (desc->cyclic) { + desc->completed_desc_num = complete_desc_num; + ret = regmap_read(xdev->rmap, xchan->base + XDMA_CHAN_STATUS, &st); if (ret) @@ -768,6 +768,8 @@ static irqreturn_t xdma_channel_isr(int irq, void *dev_id) goto out; } + desc->completed_desc_num += complete_desc_num; + /* * if all data blocks are transferred, remove and complete the request */ |