dmaengine Archive on lore.kernel.org
 help / color / Atom feed
* [PATCH] dmaengine: ti: k3-udma: Add missing dma_sync call for rx flush descriptor
@ 2020-05-12 13:45 Peter Ujfalusi
  2020-05-15  5:54 ` Vinod Koul
  0 siblings, 1 reply; 2+ messages in thread
From: Peter Ujfalusi @ 2020-05-12 13:45 UTC (permalink / raw)
  To: vkoul; +Cc: dmaengine, dan.j.williams

The TR mode rx flush descriptor did not had a dma_sync_single_for_device()
call to make sure that the DMA see the correct information.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
 drivers/dma/ti/k3-udma.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c
index 20b1f94de86c..5afd0fde4706 100644
--- a/drivers/dma/ti/k3-udma.c
+++ b/drivers/dma/ti/k3-udma.c
@@ -3472,6 +3472,9 @@ static int udma_setup_rx_flush(struct udma_dev *ud)
 	tr_req->icnt0 = rx_flush->buffer_size;
 	tr_req->icnt1 = 1;
 
+	dma_sync_single_for_device(dev, hwdesc->cppi5_desc_paddr,
+				   hwdesc->cppi5_desc_size, DMA_TO_DEVICE);
+
 	/* Set up descriptor to be used for packet mode */
 	hwdesc = &rx_flush->hwdescs[1];
 	hwdesc->cppi5_desc_size = ALIGN(sizeof(struct cppi5_host_desc_t) +
-- 
Peter

Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki


^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [PATCH] dmaengine: ti: k3-udma: Add missing dma_sync call for rx flush descriptor
  2020-05-12 13:45 [PATCH] dmaengine: ti: k3-udma: Add missing dma_sync call for rx flush descriptor Peter Ujfalusi
@ 2020-05-15  5:54 ` Vinod Koul
  0 siblings, 0 replies; 2+ messages in thread
From: Vinod Koul @ 2020-05-15  5:54 UTC (permalink / raw)
  To: Peter Ujfalusi; +Cc: dmaengine, dan.j.williams

On 12-05-20, 16:45, Peter Ujfalusi wrote:
> The TR mode rx flush descriptor did not had a dma_sync_single_for_device()
> call to make sure that the DMA see the correct information.

Applied, thanks

-- 
~Vinod

^ permalink raw reply	[flat|nested] 2+ messages in thread

end of thread, back to index

Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-05-12 13:45 [PATCH] dmaengine: ti: k3-udma: Add missing dma_sync call for rx flush descriptor Peter Ujfalusi
2020-05-15  5:54 ` Vinod Koul

dmaengine Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/dmaengine/0 dmaengine/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 dmaengine dmaengine/ https://lore.kernel.org/dmaengine \
		dmaengine@vger.kernel.org
	public-inbox-index dmaengine

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.dmaengine


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git