Blackfin arch: drop irq_callback from struct dma_channel

the irq member already serves the same purpose

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

1 files changed, 2 insertions, 3 deletions

diff --git a/arch/blackfin/kernel/bfin_dma_5xx.c b/arch/blackfin/kernel/bfin_dma_5xx.c
index b6cf643f5935..bdebab41419f 100644
--- a/arch/blackfin/kernel/bfin_dma_5xx.c
+++ b/arch/blackfin/kernel/bfin_dma_5xx.c
@@ -140,7 +140,7 @@ int request_dma(unsigned int channel, const char *device_id)
 #endif
 
         dma_ch[channel].device_id = device_id;
-        dma_ch[channel].irq_callback = NULL;
+        dma_ch[channel].irq = 0;
 
         /* This is to be enabled by putting a restriction -
          * you have to request DMA, before doing any operations on
@@ -169,7 +169,6 @@ int set_dma_callback(unsigned int channel, irq_handler_t callback, void *data)
                                "Request irq in DMA engine failed.\n");
                         return -EPERM;
                 }
-                dma_ch[channel].irq_callback = callback;
         }
         return 0;
 }
@@ -185,7 +184,7 @@ void free_dma(unsigned int channel)
         disable_dma(channel);
         clear_dma_buffer(channel);
 
-        if (dma_ch[channel].irq_callback != NULL)
+        if (dma_ch[channel].irq)
                 free_irq(dma_ch[channel].irq, dma_ch[channel].data);
 
         /* Clear the DMA Variable in the Channel */