ASoC: txx9aclc: dynamically allocate dmaengine devname

Use kasprintf to allocate temporary devname string instead of a
fixed size string.
This fixes "FIXME" introduced on removal of BUS_ID_SIZE.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 6 insertions, 4 deletions

diff --git a/sound/soc/txx9/txx9aclc.c b/sound/soc/txx9/txx9aclc.c
index 938a58a5a244..efed64b8b026 100644
--- a/sound/soc/txx9/txx9aclc.c
+++ b/sound/soc/txx9/txx9aclc.c
@@ -297,15 +297,17 @@ static int txx9aclc_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
 static bool filter(struct dma_chan *chan, void *param)
 {
         struct txx9aclc_dmadata *dmadata = param;
-        char devname[20 + 2]; /* FIXME: old BUS_ID_SIZE + 2 */
+        char *devname;
+        bool found = false;
 
-        snprintf(devname, sizeof(devname), "%s.%d", dmadata->dma_res->name,
+        devname = kasprintf(GFP_KERNEL, "%s.%d", dmadata->dma_res->name,
                 (int)dmadata->dma_res->start);
         if (strcmp(dev_name(chan->device->dev), devname) == 0) {
                 chan->private = &dmadata->dma_slave;
-                return true;
+                found = true;
         }
-        return false;
+        kfree(devname);
+        return found;
 }
 
 static int txx9aclc_dma_init(struct txx9aclc_soc_device *dev,