arch/sh/drivers/dma/dma-api.c:164:5: warning: no previous prototype for
'dmac_search_free_channel' [-Wmissing-prototypes]
dmac_search_free_channel() never had a user in upstream, remove it.
Signed-off-by: Geert Uytterhoeven <geert+rene...@glider.be>
---
dma_extend(), get_dma_info_by_name(), register_chan_caps(), and
request_dma_bycap() are also unused, but don't trigger warnings
---
arch/sh/drivers/dma/dma-api.c | 27 ---------------------------
1 file changed, 27 deletions(-)
diff --git a/arch/sh/drivers/dma/dma-api.c b/arch/sh/drivers/dma/dma-api.c
index 89cd4a3b4ccafbe2..f49097fa634c36d4 100644
--- a/arch/sh/drivers/dma/dma-api.c
+++ b/arch/sh/drivers/dma/dma-api.c
@@ -161,33 +161,6 @@ int request_dma_bycap(const char **dmac, const char
**caps, const char *dev_id)
}
EXPORT_SYMBOL(request_dma_bycap);
-int dmac_search_free_channel(const char *dev_id)
-{
- struct dma_channel *channel = { 0 };
- struct dma_info *info = get_dma_info(0);
- int i;
-
- for (i = 0; i < info->nr_channels; i++) {
- channel = &info->channels[i];
- if (unlikely(!channel))
- return -ENODEV;
-
- if (atomic_read(&channel->busy) == 0)
- break;
- }
-
- if (info->ops->request) {
- int result = info->ops->request(channel);
- if (result)
- return result;
-
- atomic_set(&channel->busy, 1);
- return channel->chan;
- }
-
- return -ENOSYS;
-}
-
int request_dma(unsigned int chan, const char *dev_id)
{
struct dma_channel *channel = { 0 };
--
2.34.1
