6.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Louis Chauvet louis.chauvet@bootlin.com
commit 462237d2d93fc9e9221d1cf9f773954d27da83c0 upstream.
Requests the vchan lock before using xdma->stop_request.
Fixes: 6a40fb824596 ("dmaengine: xilinx: xdma: Fix synchronization issue") Cc: stable@vger.kernel.org Signed-off-by: Louis Chauvet louis.chauvet@bootlin.com Link: https://lore.kernel.org/r/20240607-xdma-fixes-v2-1-0282319ce345@bootlin.com Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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)