ASoC: p1022ds: fix incorrect referencing of device tree properties

Device tree integer properties are encoded in big-endian format, but some of
the Freescale ASoC drivers were assuming that the host is in big-endian format
as well.  Although this is true, it's better to use endian-safe accessors.

Also add a check for a failed ioremap() call in the SSI driver.

Signed-off-by: Timur Tabi <timur@freescale.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

4 files changed, 18 insertions, 13 deletions

diff --git a/sound/soc/fsl/fsl_dma.c b/sound/soc/fsl/fsl_dma.c
index 50b5df8c095f..3872598d04aa 100644
--- a/sound/soc/fsl/fsl_dma.c
+++ b/sound/soc/fsl/fsl_dma.c
@@ -940,7 +940,7 @@ static int __devinit fsl_soc_dma_probe(struct platform_device *pdev)
 
         iprop = of_get_property(ssi_np, "fsl,fifo-depth", NULL);
         if (iprop)
-                dma->ssi_fifo_depth = *iprop;
+                dma->ssi_fifo_depth = be32_to_cpup(iprop);
         else
                 /* Older 8610 DTs didn't have the fifo-depth property */
                 dma->ssi_fifo_depth = 8;
diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c
index 313e0ccedd5b..d48afea5d93d 100644
--- a/sound/soc/fsl/fsl_ssi.c
+++ b/sound/soc/fsl/fsl_ssi.c
@@ -678,7 +678,12 @@ static int __devinit fsl_ssi_probe(struct platform_device *pdev)
                 kfree(ssi_private);
                 return ret;
         }
-        ssi_private->ssi = ioremap(res.start, 1 + res.end - res.start);
+        ssi_private->ssi = of_iomap(np, 0);
+        if (!ssi_private->ssi) {
+                dev_err(&pdev->dev, "could not map device resources\n");
+                kfree(ssi_private);
+                return -ENOMEM;
+        }
         ssi_private->ssi_phys = res.start;
         ssi_private->irq = irq_of_parse_and_map(np, 0);
 
@@ -691,7 +696,7 @@ static int __devinit fsl_ssi_probe(struct platform_device *pdev)
         /* Determine the FIFO depth. */
         iprop = of_get_property(np, "fsl,fifo-depth", NULL);
         if (iprop)
-                ssi_private->fifo_depth = *iprop;
+                ssi_private->fifo_depth = be32_to_cpup(iprop);
         else
                 /* Older 8610 DTs didn't have the fifo-depth property */
                 ssi_private->fifo_depth = 8;
diff --git a/sound/soc/fsl/mpc8610_hpcd.c b/sound/soc/fsl/mpc8610_hpcd.c
index c16c6b2eff95..a19297959587 100644
--- a/sound/soc/fsl/mpc8610_hpcd.c
+++ b/sound/soc/fsl/mpc8610_hpcd.c
@@ -233,7 +233,7 @@ static int get_parent_cell_index(struct device_node *np)
         if (!iprop)
                 return -1;
 
-        return *iprop;
+        return be32_to_cpup(iprop);
 }
 
 /**
@@ -258,7 +258,7 @@ static int codec_node_dev_name(struct device_node *np, char *buf, size_t len)
         if (!iprop)
                 return -EINVAL;
 
-        addr = *iprop;
+        addr = be32_to_cpup(iprop);
 
         bus = get_parent_cell_index(np);
         if (bus < 0)
@@ -305,7 +305,7 @@ static int get_dma_channel(struct device_node *ssi_np,
                 return -EINVAL;
         }
 
-        *dma_channel_id = *iprop;
+        *dma_channel_id = be32_to_cpup(iprop);
         *dma_id = get_parent_cell_index(dma_channel_np);
         of_node_put(dma_channel_np);
 
@@ -379,7 +379,7 @@ static int mpc8610_hpcd_probe(struct platform_device *pdev)
                 ret = -EINVAL;
                 goto error;
         }
-        machine_data->ssi_id = *iprop;
+        machine_data->ssi_id = be32_to_cpup(iprop);
 
         /* Get the serial format and clock direction. */
         sprop = of_get_property(np, "fsl,mode", NULL);
@@ -405,7 +405,7 @@ static int mpc8610_hpcd_probe(struct platform_device *pdev)
                         ret = -EINVAL;
                         goto error;
                 }
-                machine_data->clk_frequency = *iprop;
+                machine_data->clk_frequency = be32_to_cpup(iprop);
         } else if (strcasecmp(sprop, "i2s-master") == 0) {
                 machine_data->dai_format = SND_SOC_DAIFMT_I2S;
                 machine_data->codec_clk_direction = SND_SOC_CLOCK_IN;
diff --git a/sound/soc/fsl/p1022_ds.c b/sound/soc/fsl/p1022_ds.c
index 66e0b68af147..8fa4d5f8eda1 100644
--- a/sound/soc/fsl/p1022_ds.c
+++ b/sound/soc/fsl/p1022_ds.c
@@ -232,7 +232,7 @@ static int get_parent_cell_index(struct device_node *np)
 
         iprop = of_get_property(parent, "cell-index", NULL);
         if (iprop)
-                ret = *iprop;
+                ret = be32_to_cpup(iprop);
 
         of_node_put(parent);
 
@@ -261,7 +261,7 @@ static int codec_node_dev_name(struct device_node *np, char *buf, size_t len)
         if (!iprop)
                 return -EINVAL;
 
-        addr = *iprop;
+        addr = be32_to_cpup(iprop);
 
         bus = get_parent_cell_index(np);
         if (bus < 0)
@@ -308,7 +308,7 @@ static int get_dma_channel(struct device_node *ssi_np,
                 return -EINVAL;
         }
 
-        *dma_channel_id = *iprop;
+        *dma_channel_id = be32_to_cpup(iprop);
         *dma_id = get_parent_cell_index(dma_channel_np);
         of_node_put(dma_channel_np);
 
@@ -379,7 +379,7 @@ static int p1022_ds_probe(struct platform_device *pdev)
                 ret = -EINVAL;
                 goto error;
         }
-        mdata->ssi_id = *iprop;
+        mdata->ssi_id = be32_to_cpup(iprop);
 
         /* Get the serial format and clock direction. */
         sprop = of_get_property(np, "fsl,mode", NULL);
@@ -405,7 +405,7 @@ static int p1022_ds_probe(struct platform_device *pdev)
                         ret = -EINVAL;
                         goto error;
                 }
-                mdata->clk_frequency = *iprop;
+                mdata->clk_frequency = be32_to_cpup(iprop);
         } else if (strcasecmp(sprop, "i2s-master") == 0) {
                 mdata->dai_format = SND_SOC_DAIFMT_I2S;
                 mdata->codec_clk_direction = SND_SOC_CLOCK_IN;