diff options
| author |   Linus Walleij <linus.walleij@stericsson.com> | 2010-03-02 14:17:44 -0700 |
|---|---|---|
| committer |   Dan Williams <dan.j.williams@intel.com> | 2010-03-02 14:17:44 -0700 |
| commit | 0b58828c923e57f1bfbbd2c4277ceb60666314fa (patch) | |
| tree | 399402924ea132fdea66a0fce141c9cae6020b8e /drivers/dma/coh901318_lli.c | |
| parent | DMAENGINE: COH 901 318 descriptor pool refactoring (diff) | |
| download | linux-dev-0b58828c923e57f1bfbbd2c4277ceb60666314fa.tar.xz linux-dev-0b58828c923e57f1bfbbd2c4277ceb60666314fa.zip | |
DMAENGINE: COH 901 318 remove irq counting
This removes the pointless irq counting for the COH 901 318, as
it turns out the hardware will only ever fire one IRQ for a linked
list anyway. In the process also a missing spinlock was introduced.
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma/coh901318_lli.c')
| -rw-r--r-- | drivers/dma/coh901318_lli.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/drivers/dma/coh901318_lli.c b/drivers/dma/coh901318_lli.c index f5120f238a4d..5f9af1956eab 100644 --- a/drivers/dma/coh901318_lli.c +++ b/drivers/dma/coh901318_lli.c @@ -166,8 +166,7 @@ coh901318_lli_fill_memcpy(struct coh901318_pool *pool, lli->src_addr = src; lli->dst_addr = dst; - /* One irq per single transfer */ - return 1; + return 0; } int @@ -223,8 +222,7 @@ coh901318_lli_fill_single(struct coh901318_pool *pool, lli->src_addr = src; lli->dst_addr = dst; - /* One irq per single transfer */ - return 1; + return 0; } int @@ -240,7 +238,6 @@ coh901318_lli_fill_sg(struct coh901318_pool *pool, u32 ctrl_sg; dma_addr_t src = 0; dma_addr_t dst = 0; - int nbr_of_irq = 0; u32 bytes_to_transfer; u32 elem_size; @@ -269,9 +266,6 @@ coh901318_lli_fill_sg(struct coh901318_pool *pool, ctrl_sg = ctrl ? ctrl : ctrl_last; - if ((ctrl_sg & ctrl_irq_mask)) - nbr_of_irq++; - if (dir == DMA_TO_DEVICE) /* increment source address */ src = sg_dma_address(sg); @@ -310,8 +304,7 @@ coh901318_lli_fill_sg(struct coh901318_pool *pool, } spin_unlock(&pool->lock); - /* There can be many IRQs per sg transfer */ - return nbr_of_irq; + return 0; err: spin_unlock(&pool->lock); return -EINVAL; |