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| author | Rabin Vincent <rabin.vincent@stericsson.com> | 2011-01-25 11:18:28 +0100 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2011-01-30 22:27:20 -0800 |
| commit | 822c567639971628ceba2c53531670d595e3164d (patch) | |
| tree | 5a292828c12cb2cb1ee787345159f3a244fc826f /drivers/dma/ste_dma40.c | |
| parent | cc31b6f7949efd46c5f13d0758cf7b0bcb71fae2 (diff) | |
| download | linux-822c567639971628ceba2c53531670d595e3164d.tar.gz linux-822c567639971628ceba2c53531670d595e3164d.tar.bz2 linux-822c567639971628ceba2c53531670d595e3164d.zip | |
dma40: unify src/dst addr check
Acked-by: Per Forlin <per.forlin@stericsson.com>
Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma/ste_dma40.c')
| -rw-r--r-- | drivers/dma/ste_dma40.c | 29 |
1 files changed, 16 insertions, 13 deletions
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index 3c61c582303d..d9dfda2c65b5 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -1635,11 +1635,9 @@ static u32 stedma40_residue(struct dma_chan *chan) static int d40_prep_sg_log(struct d40_chan *chan, struct d40_desc *desc, struct scatterlist *sg_src, struct scatterlist *sg_dst, - unsigned int sg_len, enum dma_data_direction direction, - dma_addr_t dev_addr) + unsigned int sg_len, dma_addr_t src_dev_addr, + dma_addr_t dst_dev_addr) { - dma_addr_t src_dev_addr = direction == DMA_FROM_DEVICE ? dev_addr : 0; - dma_addr_t dst_dev_addr = direction == DMA_TO_DEVICE ? dev_addr : 0; struct stedma40_chan_cfg *cfg = &chan->dma_cfg; struct stedma40_half_channel_info *src_info = &cfg->src_info; struct stedma40_half_channel_info *dst_info = &cfg->dst_info; @@ -1665,11 +1663,9 @@ d40_prep_sg_log(struct d40_chan *chan, struct d40_desc *desc, static int d40_prep_sg_phy(struct d40_chan *chan, struct d40_desc *desc, struct scatterlist *sg_src, struct scatterlist *sg_dst, - unsigned int sg_len, enum dma_data_direction direction, - dma_addr_t dev_addr) + unsigned int sg_len, dma_addr_t src_dev_addr, + dma_addr_t dst_dev_addr) { - dma_addr_t src_dev_addr = direction == DMA_FROM_DEVICE ? dev_addr : 0; - dma_addr_t dst_dev_addr = direction == DMA_TO_DEVICE ? dev_addr : 0; struct stedma40_chan_cfg *cfg = &chan->dma_cfg; struct stedma40_half_channel_info *src_info = &cfg->src_info; struct stedma40_half_channel_info *dst_info = &cfg->dst_info; @@ -1757,7 +1753,8 @@ d40_prep_sg(struct dma_chan *dchan, struct scatterlist *sg_src, enum dma_data_direction direction, unsigned long dma_flags) { struct d40_chan *chan = container_of(dchan, struct d40_chan, chan); - dma_addr_t dev_addr = 0; + dma_addr_t src_dev_addr = 0; + dma_addr_t dst_dev_addr = 0; struct d40_desc *desc; unsigned long flags; int ret; @@ -1773,15 +1770,21 @@ d40_prep_sg(struct dma_chan *dchan, struct scatterlist *sg_src, if (desc == NULL) goto err; - if (direction != DMA_NONE) - dev_addr = d40_get_dev_addr(chan, direction); + if (direction != DMA_NONE) { + dma_addr_t dev_addr = d40_get_dev_addr(chan, direction); + + if (direction == DMA_FROM_DEVICE) + src_dev_addr = dev_addr; + else if (direction == DMA_TO_DEVICE) + dst_dev_addr = dev_addr; + } if (chan_is_logical(chan)) ret = d40_prep_sg_log(chan, desc, sg_src, sg_dst, - sg_len, direction, dev_addr); + sg_len, src_dev_addr, dst_dev_addr); else ret = d40_prep_sg_phy(chan, desc, sg_src, sg_dst, - sg_len, direction, dev_addr); + sg_len, src_dev_addr, dst_dev_addr); if (ret) { chan_err(chan, "Failed to prepare %s sg job: %d\n", |