Requests the vchan lock before using xdma->stop_request.
Fixes: 6a40fb824596 ("dmaengine: xilinx: xdma: Fix synchronization issue")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Louis Chauvet <louis.chauvet@xxxxxxxxxxx>
---
Changes in v2:
- Apply comments from Markus
- Link to v1: https://lore.kernel.org/r/20240527-xdma-fixes-v1-1-f31434b56842@xxxxxxxxxxx
---
drivers/dma/xilinx/xdma.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/xilinx/xdma.c b/drivers/dma/xilinx/xdma.c
index e143a7330816..718842fdaf98 100644
--- a/drivers/dma/xilinx/xdma.c
+++ b/drivers/dma/xilinx/xdma.c
@@ -885,11 +885,11 @@ static irqreturn_t xdma_channel_isr(int irq, void *dev_id)
u32 st;
bool repeat_tx;
+ spin_lock(&xchan->vchan.lock);
+
if (xchan->stop_requested)
complete(&xchan->last_interrupt);
- spin_lock(&xchan->vchan.lock);
-
/* get submitted request */
vd = vchan_next_desc(&xchan->vchan);
if (!vd)
---
base-commit: 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0
change-id: 20240527-xdma-fixes-74bbe2dcbeb8
Best regards,
--
Louis Chauvet <louis.chauvet@xxxxxxxxxxx>
