From: Lubomir Rintel <lkundrak@v3.sk>
To: Vinod Koul <vkoul@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>,
dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org,
Lubomir Rintel <lkundrak@v3.sk>
Subject: [PATCH 5/7] dmaengine: mmp_tdma: Log an error if channel is in wrong state
Date: Sun, 19 Apr 2020 18:49:10 +0200 [thread overview]
Message-ID: <20200419164912.670973-6-lkundrak@v3.sk> (raw)
In-Reply-To: <20200419164912.670973-1-lkundrak@v3.sk>
Let's log an error if the channel can't be prepared because it is in an
unexpected state.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
---
drivers/dma/mmp_tdma.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c
index 0b1aa6eab1801..191640f26246d 100644
--- a/drivers/dma/mmp_tdma.c
+++ b/drivers/dma/mmp_tdma.c
@@ -436,8 +436,10 @@ static struct dma_async_tx_descriptor *mmp_tdma_prep_dma_cyclic(
int num_periods = buf_len / period_len;
int i = 0, buf = 0;
- if (tdmac->status != DMA_COMPLETE)
+ if (tdmac->status != DMA_COMPLETE) {
+ dev_err(tdmac->dev, "controller busy");
return NULL;
+ }
if (period_len > TDMA_MAX_XFER_BYTES) {
dev_err(tdmac->dev,
--
2.26.0
next prev parent reply other threads:[~2020-04-19 16:49 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-19 16:49 [PATCH 0/7] dmaengine: mmp_tdma: Make the driver actually work Lubomir Rintel
2020-04-19 16:49 ` [PATCH 1/7] dmaengine: mmp_tdma: Do not ignore slave config validation errors Lubomir Rintel
2020-04-23 7:13 ` Vinod Koul
2020-04-19 16:49 ` [PATCH 2/7] dmaengine: mmp_tdma: Drop "mmp_tdma: from error messages Lubomir Rintel
2020-04-23 7:13 ` Vinod Koul
2020-04-19 16:49 ` [PATCH 3/7] dmaengine: mmp_tdma: Validate the transfer direction Lubomir Rintel
2020-04-23 7:06 ` Vinod Koul
2020-04-19 16:49 ` [PATCH 4/7] dmaengine: mmp_tdma: Reset channel error on release Lubomir Rintel
2020-04-23 7:14 ` Vinod Koul
2020-04-19 16:49 ` Lubomir Rintel [this message]
2020-04-23 7:15 ` [PATCH 5/7] dmaengine: mmp_tdma: Log an error if channel is in wrong state Vinod Koul
2020-04-19 16:49 ` [PATCH 6/7] dmaengine: mmp_tdma: Fill in slave capabilities Lubomir Rintel
2020-04-23 7:16 ` Vinod Koul
2020-04-19 16:49 ` [PATCH 7/7] dmaengine: mmp_tdma: Remove the MMP_SRAM dependency Lubomir Rintel
2020-04-23 7:16 ` Vinod Koul
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