6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mrinmay Sarkar <quic_msarkar@xxxxxxxxxxx>
commit 383baf5c8f062091af34c63f28d37642a8f188ae upstream.
The current logic is enabling both STOP_INT_MASK and ABORT_INT_MASK
bit. This is apparently masking those particular interrupts rather than
unmasking the same. If the interrupts are masked, they would never get
triggered.
So fix the issue by unmasking the STOP and ABORT interrupts properly.
Fixes: e74c39573d35 ("dmaengine: dw-edma: Add support for native HDMA")
cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Mrinmay Sarkar <quic_msarkar@xxxxxxxxxxx>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
Link: https://lore.kernel.org/r/1724674261-3144-2-git-send-email-quic_msarkar@xxxxxxxxxxx
Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/dma/dw-edma/dw-hdma-v0-core.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/dma/dw-edma/dw-hdma-v0-core.c b/drivers/dma/dw-edma/dw-hdma-v0-core.c
index 10e8f0715114..2addaca3b694 100644
--- a/drivers/dma/dw-edma/dw-hdma-v0-core.c
+++ b/drivers/dma/dw-edma/dw-hdma-v0-core.c
@@ -247,10 +247,11 @@ static void dw_hdma_v0_core_start(struct dw_edma_chunk *chunk, bool first)
if (first) {
/* Enable engine */
SET_CH_32(dw, chan->dir, chan->id, ch_en, BIT(0));
- /* Interrupt enable&unmask - done, abort */
- tmp = GET_CH_32(dw, chan->dir, chan->id, int_setup) |
- HDMA_V0_STOP_INT_MASK | HDMA_V0_ABORT_INT_MASK |
- HDMA_V0_LOCAL_STOP_INT_EN | HDMA_V0_LOCAL_ABORT_INT_EN;
+ /* Interrupt unmask - stop, abort */
+ tmp = GET_CH_32(dw, chan->dir, chan->id, int_setup);
+ tmp &= ~(HDMA_V0_STOP_INT_MASK | HDMA_V0_ABORT_INT_MASK);
+ /* Interrupt enable - stop, abort */
+ tmp |= HDMA_V0_LOCAL_STOP_INT_EN | HDMA_V0_LOCAL_ABORT_INT_EN;
if (!(dw->chip->flags & DW_EDMA_CHIP_LOCAL))
tmp |= HDMA_V0_REMOTE_STOP_INT_EN | HDMA_V0_REMOTE_ABORT_INT_EN;
SET_CH_32(dw, chan->dir, chan->id, int_setup, tmp);
--
2.46.0
