[PATCH] staging: fbtft: Disable DMA support if DMA is not available

[Geert Uytterhoeven]

If NO_DMA=y:

    drivers/built-in.o: In function `fbtft_framebuffer_alloc':
    (.text+0xb53cae): undefined reference to `dmam_alloc_coherent'

As DMA support is already optional, make it depend on HAS_DMA.

Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
---
 drivers/staging/fbtft/fbtft-core.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c
index 53b748be27124793..88bf4705ebadc590 100644
--- a/drivers/staging/fbtft/fbtft-core.c
+++ b/drivers/staging/fbtft/fbtft-core.c
@@ -47,9 +47,13 @@ static unsigned long debug;
 module_param(debug, ulong, 0);
 MODULE_PARM_DESC(debug, "override device debug level");
 
+#ifdef CONFIG_HAS_DMA
 static bool dma = true;
 module_param(dma, bool, 0);
 MODULE_PARM_DESC(dma, "Use DMA buffer");
+#else
+static const bool dma;
+#endif
 
 
 void fbtft_dbg_hex(const struct device *dev, int groupsize,
-- 
1.9.1

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