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Message-ID: <20221025090306.297886-18-tudor.ambarus@microchip.com>
Date: Tue, 25 Oct 2022 12:02:51 +0300
From: Tudor Ambarus <tudor.ambarus@...rochip.com>
To: <vkoul@...nel.org>, <peda@...ntia.se>, <du@...ntia.se>
CC: <maciej.sosnowski@...el.com>, <nicolas.ferre@...rochip.com>,
<mripard@...nel.org>, <torfl6749@...il.com>,
<linux-kernel@...r.kernel.org>, <dmaengine@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
"Tudor Ambarus" <tudor.ambarus@...rochip.com>
Subject: [PATCH v2 17/32] dmaengine: at_hdmac: Return dma_cookie_status()'s ret code when txstate is NULL
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@...rochip.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 f365ac4d87ff..10b6b0435d52 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -1461,14 +1461,8 @@ 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
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