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>

diff --git a/arch/blackfin/include/asm/dma.h b/arch/blackfin/include/asm/dma.h
index 045bd1c..c327135 100644 (file)
--- a/arch/blackfin/include/asm/dma.h
+++ b/arch/blackfin/include/asm/dma.h
@@ -118,7 +118,6 @@ struct dma_channel {
        struct dmasg *sg;               /* large mode descriptor */
        unsigned int ctrl_num;  /* controller number */
        unsigned int irq;
-       irq_handler_t irq_callback;
        void *data;
        unsigned int dma_enable_flag;
        unsigned int loopback_flag;

diff --git a/arch/blackfin/kernel/bfin_dma_5xx.c b/arch/blackfin/kernel/bfin_dma_5xx.c
index b6cf643..bdebab4 100644 (file)
--- 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 */