Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma

Pull slave-dma fixes from Vinod Koul:
 "This request brings you two small fixes.  First one for fixing
  dereference of freed descriptor and second for fixing sdma bindings
  for it to work for imx25.

  I was planning to send this about 10days ago but then I had to proceed
  on my paternity leave and didnt get chance to send this.  Now got a
  bit of time from dady duties :)"

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dma: sdma: Add imx25 compatible
  dma: ste_dma40: don't dereference free:d descriptor

2 files changed, 4 insertions, 1 deletions

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 4e7918339b12..19041cefabb1 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -449,6 +449,7 @@ static const struct of_device_id sdma_dt_ids[] = {
         { .compatible = "fsl,imx51-sdma", .data = &sdma_imx51, },
         { .compatible = "fsl,imx35-sdma", .data = &sdma_imx35, },
         { .compatible = "fsl,imx31-sdma", .data = &sdma_imx31, },
+        { .compatible = "fsl,imx25-sdma", .data = &sdma_imx25, },
         { /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, sdma_dt_ids);
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 00a2de957b23..bf18c786ed40 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -1641,6 +1641,7 @@ static void dma_tasklet(unsigned long data)
         struct d40_chan *d40c = (struct d40_chan *) data;
         struct d40_desc *d40d;
         unsigned long flags;
+        bool callback_active;
         dma_async_tx_callback callback;
         void *callback_param;
 
@@ -1668,6 +1669,7 @@ static void dma_tasklet(unsigned long data)
         }
 
         /* Callback to client */
+        callback_active = !!(d40d->txd.flags & DMA_PREP_INTERRUPT);
         callback = d40d->txd.callback;
         callback_param = d40d->txd.callback_param;
 
@@ -1690,7 +1692,7 @@ static void dma_tasklet(unsigned long data)
 
         spin_unlock_irqrestore(&d40c->lock, flags);
 
-        if (callback && (d40d->txd.flags & DMA_PREP_INTERRUPT))
+        if (callback_active && callback)
                 callback(callback_param);
 
         return;