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ASoC: Intel: Don't change offset of block allocator during fixed allocate 

The offset of block allocator, ba->offset, should not be changed during
fixed address allocating, for the caller may treat it as the offset of
allocated memory and use it. In the case that we allocate more than 1
blocks, we should make sure this offset is correct.

Here introduces a temp allocator for the later continuous allocating.

Signed-off-by: Jie Yang <yang.jie@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jie Yang 2015-01-04 09:15:04 +08:00 committed by Mark Brown
parent 25f97549b5
commit d83901e820
1 changed files with 7 additions and 6 deletions
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13
sound/soc/intel/sst-firmware.c
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@ -706,6 +706,7 @@ static int block_alloc_fixed(struct sst_dsp *dsp, struct sst_block_allocator *ba
struct list_head *block_list)
{
struct sst_mem_block *block, *tmp;
struct sst_block_allocator ba_tmp = *ba;
u32 end = ba->offset + ba->size, block_end;
int err;
@ -730,9 +731,9 @@ static int block_alloc_fixed(struct sst_dsp *dsp, struct sst_block_allocator *ba
if (ba->offset >= block->offset && ba->offset < block_end) {
/* align ba to block boundary */
ba->size -= block_end - ba->offset;
ba->offset = block_end;
err = block_alloc_contiguous(dsp, ba, block_list);
ba_tmp.size -= block_end - ba->offset;
ba_tmp.offset = block_end;
err = block_alloc_contiguous(dsp, &ba_tmp, block_list);
if (err < 0)
return -ENOMEM;
@ -767,10 +768,10 @@ static int block_alloc_fixed(struct sst_dsp *dsp, struct sst_block_allocator *ba
list_move(&block->list, &dsp->used_block_list);
list_add(&block->module_list, block_list);
/* align ba to block boundary */
ba->size -= block_end - ba->offset;
ba->offset = block_end;
ba_tmp.size -= block_end - ba->offset;
ba_tmp.offset = block_end;
err = block_alloc_contiguous(dsp, ba, block_list);
err = block_alloc_contiguous(dsp, &ba_tmp, block_list);
if (err < 0)
return -ENOMEM;