dma40: combine duplicated d40_pool_lli_alloc() calls

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>

diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 5259a98324359eecb3b0f93df13c03c9bcee5f26..495f9eb0a4b6ecd10b458f3d2a8ef6c47a8f07e2 100644 (file)
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -332,8 +332,9 @@ static void __iomem *chan_base(struct d40_chan *chan)
        d40_err(chan2dev(d40c), format, ## arg)
 
 static int d40_pool_lli_alloc(struct d40_chan *d40c, struct d40_desc *d40d,
-                             int lli_len, bool is_log)
+                             int lli_len)
 {
+       bool is_log = chan_is_logical(d40c);
        u32 align;
        void *base;
 
@@ -1623,6 +1624,7 @@ d40_prep_desc(struct d40_chan *chan, struct scatterlist *sg,
 {
        struct stedma40_chan_cfg *cfg = &chan->dma_cfg;
        struct d40_desc *desc;
+       int ret;
 
        desc = d40_desc_get(chan);
        if (!desc)
@@ -1632,11 +1634,16 @@ d40_prep_desc(struct d40_chan *chan, struct scatterlist *sg,
                                        cfg->dst_info.data_width);
        if (desc->lli_len < 0) {
                chan_err(chan, "Unaligned size\n");
-               d40_desc_free(chan, desc);
+               goto err;
+       }
 
-               return NULL;
+       ret = d40_pool_lli_alloc(chan, desc, desc->lli_len);
+       if (ret < 0) {
+               chan_err(chan, "Could not allocate lli\n");
+               goto err;
        }
 
+
        desc->lli_current = 0;
        desc->txd.flags = dma_flags;
        desc->txd.tx_submit = d40_tx_submit;
@@ -1644,6 +1651,10 @@ d40_prep_desc(struct d40_chan *chan, struct scatterlist *sg,
        dma_async_tx_descriptor_init(&desc->txd, &chan->chan);
 
        return desc;
+
+err:
+       d40_desc_free(chan, desc);
+       return NULL;
 }
 
 struct dma_async_tx_descriptor *stedma40_memcpy_sg(struct dma_chan *chan,
@@ -1670,12 +1681,6 @@ struct dma_async_tx_descriptor *stedma40_memcpy_sg(struct dma_chan *chan,
                goto err;
 
        if (chan_is_logical(d40c)) {
-
-               if (d40_pool_lli_alloc(d40c, d40d, d40d->lli_len, true) < 0) {
-                       chan_err(d40c, "Out of memory\n");
-                       goto err;
-               }
-
                (void) d40_log_sg_to_lli(sgl_src,
                                         sgl_len,
                                         d40d->lli_log.src,
@@ -1690,11 +1695,6 @@ struct dma_async_tx_descriptor *stedma40_memcpy_sg(struct dma_chan *chan,
                                         d40c->dma_cfg.dst_info.data_width,
                                         d40c->dma_cfg.src_info.data_width);
        } else {
-               if (d40_pool_lli_alloc(d40c, d40d, d40d->lli_len, false) < 0) {
-                       chan_err(d40c, "Out of memory\n");
-                       goto err;
-               }
-
                res = d40_phy_sg_to_lli(sgl_src,
                                        sgl_len,
                                        0,
@@ -1914,11 +1914,6 @@ static int d40_prep_slave_sg_log(struct d40_desc *d40d,
        dma_addr_t dev_addr = 0;
        int total_size;
 
-       if (d40_pool_lli_alloc(d40c, d40d, d40d->lli_len, true) < 0) {
-               chan_err(d40c, "Out of memory\n");
-               return -ENOMEM;
-       }
-
        if (direction == DMA_FROM_DEVICE)
                if (d40c->runtime_addr)
                        dev_addr = d40c->runtime_addr;
@@ -1958,11 +1953,6 @@ static int d40_prep_slave_sg_phy(struct d40_desc *d40d,
        dma_addr_t dst_dev_addr;
        int res;
 
-       if (d40_pool_lli_alloc(d40c, d40d, d40d->lli_len, false) < 0) {
-               chan_err(d40c, "Out of memory\n");
-               return -ENOMEM;
-       }
-
        if (direction == DMA_FROM_DEVICE) {
                dst_dev_addr = 0;
                if (d40c->runtime_addr)