dmaengine: mmp_tdma: fix the 'pointer from integer' warnings

the driver is using unsigned long type for storing the channel register base
"reg_base", this leads to bunch of warns when we try to use this as pointer. So
better use an iomem pointer type for this variable

drivers/dma/mmp_tdma.c: In function 'mmp_tdma_chan_set_desc':
drivers/dma/mmp_tdma.c:143: warning: passing argument 2 of '__raw_writel' makes pointer from integer without a cast
drivers/dma/mmp_tdma.c:144: warning: passing argument 1 of '__raw_readl' makes pointer from integer without a cast
drivers/dma/mmp_tdma.c:144: warning: passing argument 2 of '__raw_writel' makes pointer from integer without a cast
drivers/dma/mmp_tdma.c: In function 'mmp_tdma_enable_chan':
drivers/dma/mmp_tdma.c:151: warning: passing argument 2 of '__raw_writel' makes pointer from integer without a cast
drivers/dma/mmp_tdma.c:153: warning: passing argument 1 of '__raw_readl' makes pointer from integer without a cast
drivers/dma/mmp_tdma.c:153: warning: passing argument 2 of '__raw_writel' makes pointer from integer without a cast
drivers/dma/mmp_tdma.c: In function 'mmp_tdma_disable_chan':
drivers/dma/mmp_tdma.c:160: warning: passing argument 1 of '__raw_readl' makes pointer from integer without a cast
drivers/dma/mmp_tdma.c:160: warning: passing argument 2 of '__raw_writel' makes pointer from integer without a cast
drivers/dma/mmp_tdma.c:164: warning: passing argument 2 of '__raw_writel' makes pointer from integer without a cast
drivers/dma/mmp_tdma.c: In function 'mmp_tdma_resume_chan':
drivers/dma/mmp_tdma.c:171: warning: passing argument 1 of '__raw_readl' makes pointer from integer without a cast
drivers/dma/mmp_tdma.c:171: warning: passing argument 2 of '__raw_writel' makes pointer from integer without a cast
drivers/dma/mmp_tdma.c: In function 'mmp_tdma_pause_chan':
drivers/dma/mmp_tdma.c:178: warning: passing argument 1 of '__raw_readl' makes pointer from integer without a cast
drivers/dma/mmp_tdma.c:178: warning: passing argument 2 of '__raw_writel' makes pointer from integer without a cast
drivers/dma/mmp_tdma.c: In function 'mmp_tdma_config_chan':
drivers/dma/mmp_tdma.c:263: warning: passing argument 2 of '__raw_writel' makes pointer from integer without a cast
drivers/dma/mmp_tdma.c: In function 'mmp_tdma_clear_chan_irq':
drivers/dma/mmp_tdma.c:269: warning: passing argument 1 of '__raw_readl' makes pointer from integer without a cast
drivers/dma/mmp_tdma.c:274: warning: passing argument 2 of '__raw_writel' makes pointer from integer without a cast

Signed-off-by: Vinod Koul <vinod.koul@intel.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c
index 3ddacc14a736..61b562b2602d 100644
--- a/drivers/dma/mmp_tdma.c
+++ b/drivers/dma/mmp_tdma.c
@@ -121,7 +121,7 @@ struct mmp_tdma_chan {
         int                             idx;
         enum mmp_tdma_type              type;
         int                             irq;
-        unsigned long                   reg_base;
+        void __iomem                    *reg_base;
 
         size_t                          buf_len;
         size_t                          period_len;
@@ -526,7 +526,7 @@ static int mmp_tdma_chan_init(struct mmp_tdma_device *tdev,
         tdmac->chan.device = &tdev->device;
         tdmac->idx         = idx;
         tdmac->type        = type;
-        tdmac->reg_base    = (unsigned long)tdev->base + idx * 4;
+        tdmac->reg_base    = tdev->base + idx * 4;
         tdmac->status = DMA_COMPLETE;
         tdev->tdmac[tdmac->idx] = tdmac;
         tasklet_init(&tdmac->tasklet, dma_do_tasklet, (unsigned long)tdmac);