[PATCH 06/33] dmaengine: at_hdmac: Return dma_cookie_status()'s ret code when txstate is NULL

Tudor Ambarus
2022-08-20T12:58:16Z

txstate is an optional parameter used to get a struct with auxilary
transfer status information. When not provided the call to
device_tx_status() should return the status of the dma cookie. Return the
status of dma cookie when the txstate optional parameter is not provided.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
---
drivers/dma/at_hdmac.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index 085a990f8d5d..91e53a590d5f 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -1947,14 +1947,8 @@ atc_tx_status(struct dma_chan *chan,
int bytes = 0;

ret = dma_cookie_status(chan, cookie, txstate);
- if (ret == DMA_COMPLETE)
+ if (ret == DMA_COMPLETE || !txstate)
return ret;
- /*
- * There's no point calculating the residue if there's
- * no txstate to store the value.
- */
- if (!txstate)
- return DMA_ERROR;

spin_lock_irqsave(&atchan->lock, flags);

--
2.25.1