8 files changed, 13 insertions, 10 deletions

diff --git a/Documentation/devicetree/bindings/dma/snps-dma.txt b/Documentation/devicetree/bindings/dma/snps-dma.txt
index d58675ea1abf..c261598164a7 100644
--- a/Documentation/devicetree/bindings/dma/snps-dma.txt
+++ b/Documentation/devicetree/bindings/dma/snps-dma.txt
@@ -38,7 +38,7 @@ Example:
                 chan_allocation_order = <1>;
                 chan_priority = <1>;
                 block_size = <0xfff>;
-                data_width = <3 3 0 0>;
+                data_width = <3 3>;
         };
 
 DMA clients connected to the Designware DMA controller must use the format
diff --git a/arch/arc/boot/dts/abilis_tb10x.dtsi b/arch/arc/boot/dts/abilis_tb10x.dtsi
index a098d7c05e96..cfb5052239a1 100644
--- a/arch/arc/boot/dts/abilis_tb10x.dtsi
+++ b/arch/arc/boot/dts/abilis_tb10x.dtsi
@@ -112,7 +112,7 @@
                         chan_allocation_order = <0>;
                         chan_priority = <1>;
                         block_size = <0x7ff>;
-                        data_width = <2 0 0 0>;
+                        data_width = <2>;
                         clocks = <&ahb_clk>;
                         clock-names = "hclk";
                 };
diff --git a/arch/arm/boot/dts/spear13xx.dtsi b/arch/arm/boot/dts/spear13xx.dtsi
index a6eb5436d26d..40accc87e3a2 100644
--- a/arch/arm/boot/dts/spear13xx.dtsi
+++ b/arch/arm/boot/dts/spear13xx.dtsi
@@ -117,7 +117,7 @@
                         chan_priority = <1>;
                         block_size = <0xfff>;
                         dma-masters = <2>;
-                        data_width = <3 3 0 0>;
+                        data_width = <3 3>;
                 };
 
                 dma@eb000000 {
@@ -133,7 +133,7 @@
                         chan_allocation_order = <1>;
                         chan_priority = <1>;
                         block_size = <0xfff>;
-                        data_width = <3 3 0 0>;
+                        data_width = <3 3>;
                 };
 
                 fsmc: flash@b0000000 {
diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c
index cc92cdb9994c..1d8b147282cf 100644
--- a/arch/avr32/mach-at32ap/at32ap700x.c
+++ b/arch/avr32/mach-at32ap/at32ap700x.c
@@ -607,7 +607,7 @@ static struct dw_dma_platform_data dw_dmac0_data = {
         .nr_channels    = 3,
         .block_size     = 4095U,
         .nr_masters     = 2,
-        .data_width     = { 2, 2, 0, 0 },
+        .data_width     = { 2, 2 },
 };
 
 static struct resource dw_dmac0_resource[] = {
diff --git a/drivers/dma/dw/core.c b/drivers/dma/dw/core.c
index fcb9a916e6f6..0469d8eda253 100644
--- a/drivers/dma/dw/core.c
+++ b/drivers/dma/dw/core.c
@@ -1562,7 +1562,8 @@ int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata)
                 }
         } else {
                 dw->nr_masters = pdata->nr_masters;
-                memcpy(dw->data_width, pdata->data_width, 4);
+                for (i = 0; i < dw->nr_masters; i++)
+                        dw->data_width[i] = pdata->data_width[i];
         }
 
         /* Calculate all channel mask before DMA setup */
diff --git a/drivers/dma/dw/platform.c b/drivers/dma/dw/platform.c
index a630161473a4..aaff37f53523 100644
--- a/drivers/dma/dw/platform.c
+++ b/drivers/dma/dw/platform.c
@@ -99,7 +99,7 @@ dw_dma_parse_dt(struct platform_device *pdev)
 {
         struct device_node *np = pdev->dev.of_node;
         struct dw_dma_platform_data *pdata;
-        u32 tmp, arr[4];
+        u32 tmp, arr[DW_DMA_MAX_NR_MASTERS];
 
         if (!np) {
                 dev_err(&pdev->dev, "Missing DT data\n");
@@ -126,7 +126,7 @@ dw_dma_parse_dt(struct platform_device *pdev)
                 pdata->block_size = tmp;
 
         if (!of_property_read_u32(np, "dma-masters", &tmp)) {
-                if (tmp > 4)
+                if (tmp > DW_DMA_MAX_NR_MASTERS)
                         return NULL;
 
                 pdata->nr_masters = tmp;
diff --git a/drivers/dma/dw/regs.h b/drivers/dma/dw/regs.h
index 254a1db03680..241ff2b1402b 100644
--- a/drivers/dma/dw/regs.h
+++ b/drivers/dma/dw/regs.h
@@ -285,7 +285,7 @@ struct dw_dma {
 
         /* hardware configuration */
         unsigned char           nr_masters;
-        unsigned char           data_width[4];
+        unsigned char           data_width[DW_DMA_MAX_NR_MASTERS];
 };
 
 static inline struct dw_dma_regs __iomem *__dw_regs(struct dw_dma *dw)
diff --git a/include/linux/platform_data/dma-dw.h b/include/linux/platform_data/dma-dw.h
index 359127d290e7..87ac14c584f2 100644
--- a/include/linux/platform_data/dma-dw.h
+++ b/include/linux/platform_data/dma-dw.h
@@ -13,6 +13,8 @@
 
 #include <linux/device.h>
 
+#define DW_DMA_MAX_NR_MASTERS   4
+
 /**
  * struct dw_dma_slave - Controller-specific information about a slave
  *
@@ -53,7 +55,7 @@ struct dw_dma_platform_data {
         unsigned char   chan_priority;
         unsigned short  block_size;
         unsigned char   nr_masters;
-        unsigned char   data_width[4];
+        unsigned char   data_width[DW_DMA_MAX_NR_MASTERS];
 };
 
 #endif /* _PLATFORM_DATA_DMA_DW_H */