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authorJie Yang <yang.jie@intel.com>2015-01-04 09:15:04 +0800
committerMark Brown <broonie@kernel.org>2015-01-05 20:00:20 +0000
commitd83901e82010cb3b25e69a9bbe991e9fbd940725 (patch)
treeb0b8e91a4a08d75f2b03d95a488a950a453ef7eb /sound
parent25f97549b5a19a373922e07c3e0f0b0b56a49148 (diff)
downloadlinux-d83901e82010cb3b25e69a9bbe991e9fbd940725.tar.bz2
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>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/intel/sst-firmware.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/sound/soc/intel/sst-firmware.c b/sound/soc/intel/sst-firmware.c
index ef2e8b5766a1..b3f9489794a6 100644
--- a/sound/soc/intel/sst-firmware.c
+++ b/sound/soc/intel/sst-firmware.c
@@ -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;