From: Peter Ujfalusi <peter.ujfalusi@ti.com>
To: <vkoul@kernel.org>
Cc: <dan.j.williams@intel.com>, <dmaengine@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <grygorii.strashko@ti.com>,
<t-kristo@ti.com>, <tony@atomide.com>, <vigneshr@ti.com>
Subject: [PATCH 1/3] dmaengine: ti: k3-udma: Correct completed descriptor's residue value
Date: Mon, 2 Dec 2019 22:31:26 +0200 [thread overview]
Message-ID: <20191202203128.14348-2-peter.ujfalusi@ti.com> (raw)
In-Reply-To: <20191202203128.14348-1-peter.ujfalusi@ti.com>
The residue should show the number of _not_ completed bytes, so it has to
be 0 when the full transfer is completed.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
drivers/dma/ti/k3-udma.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c
index c1450b0a8224..1b929f7a84d4 100644
--- a/drivers/dma/ti/k3-udma.c
+++ b/drivers/dma/ti/k3-udma.c
@@ -2784,13 +2784,14 @@ static void udma_desc_pre_callback(struct virt_dma_chan *vc,
if (cppi5_desc_get_type(desc_vaddr) ==
CPPI5_INFO0_DESC_TYPE_VAL_HOST) {
- result->residue = cppi5_hdesc_get_pktlen(desc_vaddr);
- if (result->residue == d->residue)
- result->result = DMA_TRANS_NOERROR;
- else
+ result->residue = d->residue -
+ cppi5_hdesc_get_pktlen(desc_vaddr);
+ if (result->residue)
result->result = DMA_TRANS_ABORTED;
+ else
+ result->result = DMA_TRANS_NOERROR;
} else {
- result->residue = d->residue;
+ result->residue = 0;
result->result = DMA_TRANS_NOERROR;
}
}
--
Peter
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
next prev parent reply other threads:[~2019-12-02 20:31 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <0191128105945.13071-1-peter.ujfalusi@ti.com>
2019-12-02 20:31 ` [PATCH 0/3] dmaengine: ti: k3-udma: Fixes against v6 series Peter Ujfalusi
2019-12-02 20:31 ` Peter Ujfalusi [this message]
2019-12-02 20:31 ` [PATCH 2/3] dmaengine: ti: k3-udma: Workaround for stale transfers Peter Ujfalusi
2019-12-02 20:31 ` [PATCH 3/3] dmaengine: ti: k3-udma: Fix early TX completion against PDMAs Peter Ujfalusi
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