lkml.org 
[lkml]   [2008]   [Nov]   [15]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
    /
    DateFri, 14 Nov 2008 22:17:04 -0800
    FromAndrew Morton <>
    SubjectRe: [PATCH 08/13] dmatest: convert to dma_request_channel
    On Fri, 14 Nov 2008 14:34:58 -0700 Dan Williams <dan.j.williams@intel.com> wrote:
    
    >  static int __init dmatest_init(void)
    >  {
    > -	dma_cap_set(DMA_MEMCPY, dmatest_client.cap_mask);
    > -	dma_async_client_register(&dmatest_client);
    > -	dma_async_client_chan_request(&dmatest_client);
    > +	dma_cap_mask_t mask;
    > +	struct dma_chan *chan;
    > +
    > +	dma_cap_zero(mask);
    > +	dma_cap_set(DMA_MEMCPY, mask);
    > +	for (;;) {
    > +		chan = dma_request_channel(mask, filter, NULL);
    > +		if (chan) {
    > +			if (dmatest_add_channel(chan) == 0)
    > +				continue;
    
    hrm.  I trust this loop can't lock up the box.
    
    > +			else
    > +				dma_release_channel(chan);
    > +		} else
    > +			break; /* no more channels available */
    > +		if (max_channels && nr_channels >= max_channels)
    > +			break; /* we have all we need */
    > +	}
    
    
    
    \
     
     \ /
      Last update: 2008-11-15 07:19    [from the cache]
    ©2003-2008