[PATCH] libata: don't initialize sg in ata_exec_internal() if DMA_NONE

[Jeff Garzik]

Arnd Bergmann wrote:
> On Monday 11 December 2006 15:02, Tejun Heo wrote:
>>  {
>>         struct scatterlist sg;
>> +       unsigned int n_elem = 0;
>>  
>> -       sg_init_one(&sg, buf, buflen);
>> +       if (dma_dir != DMA_NONE) {
>> +               WARN_ON(!buf);
>> +               sg_init_one(&sg, buf, buflen);
>> +               n_elem++;
>> +       }
>>  
> Ok, looks good as well. I still think we should have the WARN_ON()
> in sg_set_buf(), but I can send a separate patch for that to linux-mm.

Please CC me and linux-ide on all libata patches (certainly akpm as 
well).  Andrew picks up most of the libata changes automatically via git 
from my libata-dev.git#ALL.

	Jeff