[PATCH v4] amixer: skip showing asoc tlv byte controls

[Vinod Koul <vinod.koul@intel.com>]

ASoC TLV Byte controls are very large size controls so we should add new
options for these. So skip dumping contents for these.

$amixer -c0 cget numid=16
numid=16,iface=MIXER,name='mdl params'
  ; type=BYTES,access=-----RW-,values=30336
  ; ASoC TLV Byte control, skipping bytes dump

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---
 amixer/amixer.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/amixer/amixer.c b/amixer/amixer.c
index db1849333da3..f9b09cb54276 100644
--- a/amixer/amixer.c
+++ b/amixer/amixer.c
@@ -682,6 +682,14 @@ static int show_control(const char *space, snd_hctl_elem_t *elem,
 	      __skip_read:
 		if (!snd_ctl_elem_info_is_tlv_readable(info))
 			goto __skip_tlv;
+		/* skip ASoC ext bytes controls that may have huge binary TLV data */
+		if (type == SND_CTL_ELEM_TYPE_BYTES &&
+				!snd_ctl_elem_info_is_readable(info) &&
+				!snd_ctl_elem_info_is_writable(info)) {
+			printf("%s; ASoC TLV Byte control, skipping bytes dump\n", space);
+			goto __skip_tlv;
+		}
+
 		tlv = malloc(4096);
 		if ((err = snd_hctl_elem_tlv_read(elem, tlv, 4096)) < 0) {
 			error("Control %s element TLV read error: %s\n", card, snd_strerror(err));
-- 
1.9.1