ASoC: wm_adsp: Ensure that block writes are from DMA aligned addresses

Otherwise we won't run correctly on systems that require this for larger
data transfers.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c
index ffc89fab96fbf4b6ccc81973f69df863132da1ec..7b198c38f3efdd2e5d23db6c18332527f842e2f9 100644 (file)
--- a/sound/soc/codecs/wm_adsp.c
+++ b/sound/soc/codecs/wm_adsp.c
@@ -169,6 +169,7 @@ static int wm_adsp_load(struct wm_adsp *dsp)
        const struct wm_adsp_region *mem;
        const char *region_name;
        char *file, *text;
+       void *buf;
        unsigned int reg;
        int regions = 0;
        int ret, offset, type, sizes;
@@ -322,8 +323,18 @@ static int wm_adsp_load(struct wm_adsp *dsp)
                }
 
                if (reg) {
-                       ret = regmap_raw_write(regmap, reg, region->data,
+                       buf = kmemdup(region->data, le32_to_cpu(region->len),
+                                     GFP_KERNEL);
+                       if (!buf) {
+                               adsp_err(dsp, "Out of memory\n");
+                               return -ENOMEM;
+                       }
+
+                       ret = regmap_raw_write(regmap, reg, buf,
                                               le32_to_cpu(region->len));
+
+                       kfree(buf);
+
                        if (ret != 0) {
                                adsp_err(dsp,
                                        "%s.%d: Failed to write %d bytes at %d in %s: %d\n",
@@ -359,6 +370,7 @@ static int wm_adsp_load_coeff(struct wm_adsp *dsp)
        const char *region_name;
        int ret, pos, blocks, type, offset, reg;
        char *file;
+       void *buf;
 
        file = kzalloc(PAGE_SIZE, GFP_KERNEL);
        if (file == NULL)
@@ -426,6 +438,13 @@ static int wm_adsp_load_coeff(struct wm_adsp *dsp)
                }
 
                if (reg) {
+                       buf = kmemdup(blk->data, le32_to_cpu(blk->len),
+                                     GFP_KERNEL);
+                       if (!buf) {
+                               adsp_err(dsp, "Out of memory\n");
+                               return -ENOMEM;
+                       }
+
                        ret = regmap_raw_write(regmap, reg, blk->data,
                                               le32_to_cpu(blk->len));
                        if (ret != 0) {
@@ -433,6 +452,8 @@ static int wm_adsp_load_coeff(struct wm_adsp *dsp)
                                        "%s.%d: Failed to write to %x in %s\n",
                                        file, blocks, reg, region_name);
                        }
+
+                       kfree(buf);
                }
 
                pos += le32_to_cpu(blk->len) + sizeof(*blk);