DMA: shdma: Fix warnings due to declared but unused symbols

Several functions and variables are use on SH_CPU4 or ARM only. Guard
their declaration with conditional compilation directives to avoid
warnings.

Cc: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: dmaengine@vger.kernel.org
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

1 files changed, 8 insertions, 3 deletions

diff --git a/drivers/dma/sh/shdmac.c b/drivers/dma/sh/shdmac.c
index 0d765c0e21ec..21509876d459 100644
--- a/drivers/dma/sh/shdmac.c
+++ b/drivers/dma/sh/shdmac.c
@@ -443,6 +443,7 @@ static bool sh_dmae_reset(struct sh_dmae_device *shdev)
         return ret;
 }
 
+#if defined(CONFIG_CPU_SH4) || defined(CONFIG_ARM)
 static irqreturn_t sh_dmae_err(int irq, void *data)
 {
         struct sh_dmae_device *shdev = data;
@@ -453,6 +454,7 @@ static irqreturn_t sh_dmae_err(int irq, void *data)
         sh_dmae_reset(shdev);
         return IRQ_HANDLED;
 }
+#endif
 
 static bool sh_dmae_desc_completed(struct shdma_chan *schan,
                                    struct shdma_desc *sdesc)
@@ -685,9 +687,12 @@ MODULE_DEVICE_TABLE(of, sh_dmae_of_match);
 static int sh_dmae_probe(struct platform_device *pdev)
 {
         const struct sh_dmae_pdata *pdata;
-        unsigned long irqflags = 0,
-                chan_flag[SH_DMAE_MAX_CHANNELS] = {};
-        int errirq, chan_irq[SH_DMAE_MAX_CHANNELS];
+        unsigned long chan_flag[SH_DMAE_MAX_CHANNELS] = {};
+        int chan_irq[SH_DMAE_MAX_CHANNELS];
+#if defined(CONFIG_CPU_SH4) || defined(CONFIG_ARM)
+        unsigned long irqflags = 0;
+        int errirq;
+#endif
         int err, i, irq_cnt = 0, irqres = 0, irq_cap = 0;
         struct sh_dmae_device *shdev;
         struct dma_device *dma_dev;