diff options
Diffstat (limited to 'arch/blackfin')
| -rw-r--r-- | arch/blackfin/kernel/bfin_dma_5xx.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/arch/blackfin/kernel/bfin_dma_5xx.c b/arch/blackfin/kernel/bfin_dma_5xx.c index 639dcee5611c..924c00286bab 100644 --- a/arch/blackfin/kernel/bfin_dma_5xx.c +++ b/arch/blackfin/kernel/bfin_dma_5xx.c @@ -138,21 +138,20 @@ EXPORT_SYMBOL(request_dma); int set_dma_callback(unsigned int channel, irq_handler_t callback, void *data) { - BUG_ON(channel >= MAX_DMA_CHANNELS || + int ret; + unsigned int irq; + + BUG_ON(channel >= MAX_DMA_CHANNELS || !callback || !atomic_read(&dma_ch[channel].chan_status)); - if (callback != NULL) { - int ret; - unsigned int irq = channel2irq(channel); + irq = channel2irq(channel); + ret = request_irq(irq, callback, 0, dma_ch[channel].device_id, data); + if (ret) + return ret; - ret = request_irq(irq, callback, IRQF_DISABLED, - dma_ch[channel].device_id, data); - if (ret) - return ret; + dma_ch[channel].irq = irq; + dma_ch[channel].data = data; - dma_ch[channel].irq = irq; - dma_ch[channel].data = data; - } return 0; } EXPORT_SYMBOL(set_dma_callback); |