Merge tag 'dmaengine-fix-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

Pull dmaengine fixes from Vinod Koul:
 "Misc minor driver fixes and a big pile of at_hdmac driver fixes. More
  work on this driver is done and sitting in next:

   - Pile of at_hdmac driver rework which fixes many long standing
     issues for this driver.

   - couple of stm32 driver fixes for clearing structure and race fix

   - idxd fixes for RO device state and batch size

   - ti driver mem leak fix

   - apple fix for grabbing channels in xlate

   - resource leak fix in mv xor"

* tag 'dmaengine-fix-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (24 commits)
  dmaengine: at_hdmac: Check return code of dma_async_device_register
  dmaengine: at_hdmac: Fix impossible condition
  dmaengine: at_hdmac: Don't allow CPU to reorder channel enable
  dmaengine: at_hdmac: Fix completion of unissued descriptor in case of errors
  dmaengine: at_hdmac: Fix descriptor handling when issuing it to hardware
  dmaengine: at_hdmac: Fix concurrency over the active list
  dmaengine: at_hdmac: Free the memset buf without holding the chan lock
  dmaengine: at_hdmac: Fix concurrency over descriptor
  dmaengine: at_hdmac: Fix concurrency problems by removing atc_complete_all()
  dmaengine: at_hdmac: Protect atchan->status with the channel lock
  dmaengine: at_hdmac: Do not call the complete callback on device_terminate_all
  dmaengine: at_hdmac: Fix premature completion of desc in issue_pending
  dmaengine: at_hdmac: Start transfer for cyclic channels in issue_pending
  dmaengine: at_hdmac: Don't start transactions at tx_submit level
  dmaengine: at_hdmac: Fix at_lli struct definition
  dmaengine: stm32-dma: fix potential race between pause and resume
  dmaengine: ti: k3-udma-glue: fix memory leak when register device fail
  dmaengine: mv_xor_v2: Fix a resource leak in mv_xor_v2_remove()
  dmaengine: apple-admac: Fix grabbing of channels in of_xlate
  dmaengine: idxd: fix RO device state error after been disabled/reset
  ...

1 files changed, 6 insertions, 8 deletions

diff --git a/drivers/dma/stm32-dma.c b/drivers/dma/stm32-dma.c
index 4891a1767e5a..37674029cb42 100644
--- a/drivers/dma/stm32-dma.c
+++ b/drivers/dma/stm32-dma.c
@@ -675,6 +675,8 @@ static void stm32_dma_handle_chan_paused(struct stm32_dma_chan *chan)
 
 	chan->chan_reg.dma_sndtr = stm32_dma_read(dmadev, STM32_DMA_SNDTR(chan->id));
 
+	chan->status = DMA_PAUSED;
+
 	dev_dbg(chan2dev(chan), "vchan %pK: paused\n", &chan->vchan);
 }
 
@@ -789,9 +791,7 @@ static irqreturn_t stm32_dma_chan_irq(int irq, void *devid)
 	if (status & STM32_DMA_TCI) {
 		stm32_dma_irq_clear(chan, STM32_DMA_TCI);
 		if (scr & STM32_DMA_SCR_TCIE) {
-			if (chan->status == DMA_PAUSED && !(scr & STM32_DMA_SCR_EN))
-				stm32_dma_handle_chan_paused(chan);
-			else
+			if (chan->status != DMA_PAUSED)
 				stm32_dma_handle_chan_done(chan, scr);
 		}
 		status &= ~STM32_DMA_TCI;
@@ -838,13 +838,11 @@ static int stm32_dma_pause(struct dma_chan *c)
 		return -EPERM;
 
 	spin_lock_irqsave(&chan->vchan.lock, flags);
+
 	ret = stm32_dma_disable_chan(chan);
-	/*
-	 * A transfer complete flag is set to indicate the end of transfer due to the stream
-	 * interruption, so wait for interrupt
-	 */
 	if (!ret)
-		chan->status = DMA_PAUSED;
+		stm32_dma_handle_chan_paused(chan);
+
 	spin_unlock_irqrestore(&chan->vchan.lock, flags);
 
 	return ret;