diff options
| author | Mike Frysinger <vapier.adi@gmail.com> | 2009-01-07 23:14:39 +0800 |
|---|---|---|
| committer | Bryan Wu <cooloney@kernel.org> | 2009-01-07 23:14:39 +0800 |
| commit | 8f1cc233881cd5335327ef84baa6ba1c83b379b4 (patch) | |
| tree | e663b60299606914dd9b4418e63c38ffca492f64 | |
| parent | 9b011407d653b92191aa4993222523039d44af52 (diff) | |
Blackfin arch: set_dma_callback: do not store .irq
set_dma_callback: do not store .irq if request_irq() failed so we dont
turn around and attempt to free_irq() it later on in free_dma()
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
| -rw-r--r-- | arch/blackfin/kernel/bfin_dma_5xx.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/arch/blackfin/kernel/bfin_dma_5xx.c b/arch/blackfin/kernel/bfin_dma_5xx.c index bdebab41419..ed7d2859a62 100644 --- a/arch/blackfin/kernel/bfin_dma_5xx.c +++ b/arch/blackfin/kernel/bfin_dma_5xx.c @@ -157,18 +157,16 @@ int set_dma_callback(unsigned int channel, irq_handler_t callback, void *data) && channel < MAX_DMA_CHANNELS)); if (callback != NULL) { - int ret_val; - dma_ch[channel].irq = channel2irq(channel); - dma_ch[channel].data = data; + int ret; + unsigned int irq = channel2irq(channel); - ret_val = - request_irq(dma_ch[channel].irq, callback, IRQF_DISABLED, - dma_ch[channel].device_id, data); - if (ret_val) { - printk(KERN_NOTICE - "Request irq in DMA engine failed.\n"); - return -EPERM; - } + 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; } return 0; } |