ARM: OMAP: add deprecation message for legacy OMAP DMA API

The legacy OMAP DMA API is now deprecated; all remaining users should
now convert over ASAP to using the DMA engine API instead of the OMAP
private API.

Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
index b5608b1f9fbd..1c98659bbf89 100644
--- a/arch/arm/plat-omap/dma.c
+++ b/arch/arm/plat-omap/dma.c
@@ -698,6 +698,8 @@ int omap_request_dma(int dev_id, const char *dev_name,
         unsigned long flags;
         struct omap_dma_lch *chan;
 
+        WARN(strcmp(dev_name, "DMA engine"), "Using deprecated platform DMA API - please update to DMA engine");
+
         spin_lock_irqsave(&dma_chan_lock, flags);
         for (ch = 0; ch < dma_chan_count; ch++) {
                 if (free_ch == -1 && dma_chan[ch].dev_id == -1) {