[alsa-devel] [PATCH 04/13] ASoC: wm_adsp: Limit firmware control name to ALSA control name size

[Charles Keepax]

ALSA only supports control names up to 44 bytes, so there is no point
allocating a whole page of memory to hold the control name, just limit
the control name to 44 bytes.

Signed-off-by: Charles Keepax <ckeepax at opensource.wolfsonmicro.com>
---
 sound/soc/codecs/wm_adsp.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c
index 3f6b49d..c291203 100644
--- a/sound/soc/codecs/wm_adsp.c
+++ b/sound/soc/codecs/wm_adsp.c
@@ -789,7 +789,7 @@ static int wm_adsp_create_control(struct wm_adsp *dsp,
 	char *region_name;
 	int ret;
 
-	name = kmalloc(PAGE_SIZE, GFP_KERNEL);
+	name = kmalloc(SNDRV_CTL_ELEM_ID_NAME_MAXLEN, GFP_KERNEL);
 	if (!name)
 		return -ENOMEM;
 
@@ -814,7 +814,7 @@ static int wm_adsp_create_control(struct wm_adsp *dsp,
 		goto err_name;
 	}
 
-	snprintf(name, PAGE_SIZE, "DSP%d %s %x",
+	snprintf(name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN, "DSP%d %s %x",
 		 dsp->num, region_name, alg_region->alg);
 
 	list_for_each_entry(ctl, &dsp->ctl_list,
-- 
1.7.2.5