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path: root/drivers/dma/ste_dma40.c
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Diffstat (limited to 'drivers/dma/ste_dma40.c')
-rw-r--r--drivers/dma/ste_dma40.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 662d7e35f86..7bc535ee0a0 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -175,6 +175,7 @@ struct d40_base;
* @active: Active descriptor.
* @queue: Queued jobs.
* @dma_cfg: The client configuration of this dma channel.
+ * @configured: whether the dma_cfg configuration is valid
* @base: Pointer to the device instance struct.
* @src_def_cfg: Default cfg register setting for src.
* @dst_def_cfg: Default cfg register setting for dst.
@@ -198,6 +199,7 @@ struct d40_chan {
struct list_head active;
struct list_head queue;
struct stedma40_chan_cfg dma_cfg;
+ bool configured;
struct d40_base *base;
/* Default register configurations */
u32 src_def_cfg;
@@ -1518,8 +1520,7 @@ static int d40_free_dma(struct d40_chan *d40c)
return res;
}
d40c->phy_chan = NULL;
- /* Invalidate channel type */
- d40c->dma_cfg.channel_type = 0;
+ d40c->configured = false;
d40c->base->lookup_phy_chans[phy->num] = NULL;
return 0;
@@ -1704,6 +1705,9 @@ bool stedma40_filter(struct dma_chan *chan, void *data)
} else
err = d40_config_memcpy(d40c);
+ if (!err)
+ d40c->configured = true;
+
return err == 0;
}
EXPORT_SYMBOL(stedma40_filter);
@@ -1720,12 +1724,8 @@ static int d40_alloc_chan_resources(struct dma_chan *chan)
d40c->completed = chan->cookie = 1;
- /*
- * If no dma configuration is set (channel_type == 0)
- * use default configuration (memcpy)
- */
- if (d40c->dma_cfg.channel_type == 0) {
-
+ /* If no dma configuration is set use default configuration (memcpy) */
+ if (!d40c->configured) {
err = d40_config_memcpy(d40c);
if (err) {
dev_err(&d40c->chan.dev->device,