From: Shunsuke Mie <mie@igel.co.jp>
To: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Cc: Vinod Koul <vkoul@kernel.org>,
dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org,
Shunsuke Mie <mie@igel.co.jp>
Subject: [PATCH 2/2] dmaengine: dw-edma: Fix to enable to issue dma request on DMA processing
Date: Fri, 23 Dec 2022 11:26:08 +0900 [thread overview]
Message-ID: <20221223022608.550697-2-mie@igel.co.jp> (raw)
In-Reply-To: <20221223022608.550697-1-mie@igel.co.jp>
The issue_pending request is ignored while driver is processing a DMA
request. Fix to issue the pending requests on any dma channel status.
Fixes: e63d79d1ffcd ("dmaengine: Add Synopsys eDMA IP core driver")
Signed-off-by: Shunsuke Mie <mie@igel.co.jp>
---
drivers/dma/dw-edma/dw-edma-core.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-edma-core.c
index 669b97313911..80323b7a8bce 100644
--- a/drivers/dma/dw-edma/dw-edma-core.c
+++ b/drivers/dma/dw-edma/dw-edma-core.c
@@ -279,9 +279,12 @@ static void dw_edma_device_issue_pending(struct dma_chan *dchan)
struct dw_edma_chan *chan = dchan2dw_edma_chan(dchan);
unsigned long flags;
+ if (!chan->configured)
+ return;
+
spin_lock_irqsave(&chan->vc.lock, flags);
- if (chan->configured && chan->request == EDMA_REQ_NONE &&
- chan->status == EDMA_ST_IDLE && vchan_issue_pending(&chan->vc)) {
+ if (vchan_issue_pending(&chan->vc) && chan->request == EDMA_REQ_NONE &&
+ chan->status == EDMA_ST_IDLE) {
chan->status = EDMA_ST_BUSY;
dw_edma_start_transfer(chan);
}
--
2.25.1
prev parent reply other threads:[~2022-12-23 2:26 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-23 2:26 [PATCH 1/2] dmaengine: dw-edma: Fix to change for continuous transfer Shunsuke Mie
2022-12-23 2:26 ` Shunsuke Mie [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20221223022608.550697-2-mie@igel.co.jp \
--to=mie@igel.co.jp \
--cc=dmaengine@vger.kernel.org \
--cc=gustavo.pimentel@synopsys.com \
--cc=linux-kernel@vger.kernel.org \
--cc=vkoul@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®