bl602/dma: Fix possible call of null pointer to function

2022-10-09 17:04:32 -07:00 · 2022-10-09 17:04:32 -07:00 · 4ce8cf7bdc
parent 9c7bb9e088
commit 4ce8cf7bdc
1 changed files with 7 additions and 1 deletions
--- a/arch/risc-v/src/bl602/bl602_dma.c
+++ b/arch/risc-v/src/bl602/bl602_dma.c
@ -120,7 +120,13 @@ static int bl602_dma_int_handler(int irq, void *context, void *arg)
        {
          dmainfo("CH %d Error Int fired\n", ch);
          putreg32((1 << ch), BL602_DMA_INTERRCLR);
-          g_dmach[ch].callback(ch, BL602_DMA_INT_EVT_ERR, g_dmach[ch].arg);
+          if (g_dmach[ch].callback != NULL)
+            {
+              g_dmach[ch].callback(
+                ch,
+                BL602_DMA_INT_EVT_ERR,
+                g_dmach[ch].arg);
+            }
        }
    }