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dmaengine: coh901318: fix function return types build warnings 

A recent patch that removed coh901318_control() replaced it
with a number of pointers to existing functions, but those
unfortunately have the wrong return  type and need to be
changed to return an 'int' with an error value rather than
a 'void' to avoid these build warnings:

drivers/dma/coh901318.c:2697:32: warning: assignment from incompatible pointer type
  base->dma_slave.device_config = coh901318_dma_set_runtimeconfig;
                                ^
drivers/dma/coh901318.c:2698:31: warning: assignment from incompatible pointer type
  base->dma_slave.device_pause = coh901318_pause;
                               ^
drivers/dma/coh901318.c:2699:32: warning: assignment from incompatible pointer type
  base->dma_slave.device_resume = coh901318_resume

The coh901318_base_init function has the correct return type
already, but needs to be marked 'static' to avoid a sparse
warning about a missing declaration.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 6782af118b ("dmaengine: coh901318: Split device_control")
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Arnd Bergmann 2015-01-13 22:17:03 +01:00 committed by Vinod Koul
parent 848e10bb52
commit 4d76bbed2d
1 changed files with 12 additions and 8 deletions
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20
drivers/dma/coh901318.c
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@ -1690,7 +1690,7 @@ static u32 coh901318_get_bytes_left(struct dma_chan *chan)
* Pauses a transfer without losing data. Enables power save.
* Use this function in conjunction with coh901318_resume.
*/
static void coh901318_pause(struct dma_chan *chan)
static int coh901318_pause(struct dma_chan *chan)
{
u32 val;
unsigned long flags;
@ -1730,12 +1730,13 @@ static void coh901318_pause(struct dma_chan *chan)
enable_powersave(cohc);
spin_unlock_irqrestore(&cohc->lock, flags);
return 0;
}
/* Resumes a transfer that has been stopped via 300_dma_stop(..).
Power save is handled.
*/
static void coh901318_resume(struct dma_chan *chan)
static int coh901318_resume(struct dma_chan *chan)
{
u32 val;
unsigned long flags;
@ -1760,6 +1761,7 @@ static void coh901318_resume(struct dma_chan *chan)
}
spin_unlock_irqrestore(&cohc->lock, flags);
return 0;
}
bool coh901318_filter_id(struct dma_chan *chan, void *chan_id)
@ -2512,8 +2514,8 @@ static const struct burst_table burst_sizes[] = {
},
};
static void coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
struct dma_slave_config *config)
static int coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
struct dma_slave_config *config)
{
struct coh901318_chan *cohc = to_coh901318_chan(chan);
dma_addr_t addr;
@ -2533,7 +2535,7 @@ static void coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
maxburst = config->dst_maxburst;
} else {
dev_err(COHC_2_DEV(cohc), "illegal channel mode\n");
return;
return -EINVAL;
}
dev_dbg(COHC_2_DEV(cohc), "configure channel for %d byte transfers\n",
@ -2579,7 +2581,7 @@ static void coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
default:
dev_err(COHC_2_DEV(cohc),
"bad runtimeconfig: alien address width\n");
return;
return -EINVAL;
}
ctrl |= burst_sizes[i].reg;
@ -2589,10 +2591,12 @@ static void coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
cohc->addr = addr;
cohc->ctrl = ctrl;
return 0;
}
void coh901318_base_init(struct dma_device *dma, const int *pick_chans,
struct coh901318_base *base)
static void coh901318_base_init(struct dma_device *dma, const int *pick_chans,
struct coh901318_base *base)
{
int chans_i;
int i = 0;