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dma40: stop ongoing transfers in DMA_TERMINATE_ALL 

The current implementation of DMA_TERMINATE_ALL leaves ongoing transfers
running.  Fix it.

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>
This commit is contained in:
Rabin Vincent 2011-01-25 11:18:34 +01:00 committed by Dan Williams
parent 7ad74a7cf6
commit 86eb5fb611
1 changed files with 21 additions and 13 deletions
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34
drivers/dma/ste_dma40.c
View File

@ -918,10 +918,8 @@ static bool d40_tx_is_linked(struct d40_chan *d40c)
return is_link;
}
static int d40_pause(struct dma_chan *chan)
static int d40_pause(struct d40_chan *d40c)
{
struct d40_chan *d40c =
container_of(chan, struct d40_chan, chan);
int res = 0;
unsigned long flags;
@ -945,10 +943,8 @@ static int d40_pause(struct dma_chan *chan)
return res;
}
static int d40_resume(struct dma_chan *chan)
static int d40_resume(struct d40_chan *d40c)
{
struct d40_chan *d40c =
container_of(chan, struct d40_chan, chan);
int res = 0;
unsigned long flags;
@ -978,6 +974,22 @@ no_suspend:
return res;
}
static int d40_terminate_all(struct d40_chan *chan)
{
unsigned long flags;
int ret = 0;
ret = d40_pause(chan);
if (!ret && chan_is_physical(chan))
ret = d40_channel_execute_command(chan, D40_DMA_STOP);
spin_lock_irqsave(&chan->lock, flags);
d40_term_all(chan);
spin_unlock_irqrestore(&chan->lock, flags);
return ret;
}
static dma_cookie_t d40_tx_submit(struct dma_async_tx_descriptor *tx)
{
struct d40_chan *d40c = container_of(tx->chan,
@ -2176,7 +2188,6 @@ static void d40_set_runtime_config(struct dma_chan *chan,
static int d40_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
unsigned long arg)
{
unsigned long flags;
struct d40_chan *d40c = container_of(chan, struct d40_chan, chan);
if (d40c->phy_chan == NULL) {
@ -2186,14 +2197,11 @@ static int d40_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
switch (cmd) {
case DMA_TERMINATE_ALL:
spin_lock_irqsave(&d40c->lock, flags);
d40_term_all(d40c);
spin_unlock_irqrestore(&d40c->lock, flags);
return 0;
return d40_terminate_all(d40c);
case DMA_PAUSE:
return d40_pause(chan);
return d40_pause(d40c);
case DMA_RESUME:
return d40_resume(chan);
return d40_resume(d40c);
case DMA_SLAVE_CONFIG:
d40_set_runtime_config(chan,
(struct dma_slave_config *) arg);