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56 lines
1.7 KiB
Diff
56 lines
1.7 KiB
Diff
From 5fdd2623dd3eed156fa1ec65b2096da735bb0cde Mon Sep 17 00:00:00 2001
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From: Samin Guo <samin.guo@starfivetech.com>
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Date: Wed, 17 Nov 2021 14:50:45 +0800
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Subject: [PATCH 1007/1024] dmaengine: dw-axi-dmac: Handle xfer start while
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non-idle
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Signed-off-by: Samin Guo <samin.guo@starfivetech.com>
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Signed-off-by: Curry Zhang <curry.zhang@starfivetech.com>
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---
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drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c | 12 +++++++++++-
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drivers/dma/dw-axi-dmac/dw-axi-dmac.h | 1 +
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2 files changed, 12 insertions(+), 1 deletion(-)
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--- a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
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+++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
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@@ -383,11 +383,13 @@ static void axi_chan_block_xfer_start(st
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u32 irq_mask;
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u8 lms = 0; /* Select AXI0 master for LLI fetching */
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+ chan->is_err = false;
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if (unlikely(axi_chan_is_hw_enable(chan))) {
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dev_err(chan2dev(chan), "%s is non-idle!\n",
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axi_chan_name(chan));
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- return;
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+ axi_chan_disable(chan);
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+ chan->is_err = true;
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}
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axi_dma_enable(chan->chip);
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@@ -1029,6 +1031,14 @@ static noinline void axi_chan_handle_err
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axi_chan_name(chan));
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goto out;
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}
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+ if (chan->is_err) {
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+ struct axi_dma_desc *desc = vd_to_axi_desc(vd);
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+
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+ axi_chan_block_xfer_start(chan, desc);
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+ chan->is_err = false;
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+ goto out;
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+ }
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+
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/* Remove the completed descriptor from issued list */
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list_del(&vd->node);
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--- a/drivers/dma/dw-axi-dmac/dw-axi-dmac.h
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+++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac.h
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@@ -50,6 +50,7 @@ struct axi_dma_chan {
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struct dma_slave_config config;
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enum dma_transfer_direction direction;
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bool cyclic;
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+ bool is_err;
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/* these other elements are all protected by vc.lock */
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bool is_paused;
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};
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