ASoC: topology: Allow TLV control to be either read or write

commit feb00b736af64875560f371fe7f58b0b7f239046 upstream.

There is no reason to force readwrite access on TLV controls. It can be
either read, write or both. This is further evidenced in code where it
performs following checks:
                if ((k->access & SNDRV_CTL_ELEM_ACCESS_TLV_READ) && !sbe->get)
                        return -EINVAL;
                if ((k->access & SNDRV_CTL_ELEM_ACCESS_TLV_WRITE) && !sbe->put)
                        return -EINVAL;

Fixes: 1a3232d2f61d ("ASoC: topology: Add support for TLV bytes controls")
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Reviewed-by: Cezary Rojewski <cezary.rojewski@intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220112170030.569712-3-amadeuszx.slawinski@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
index 0fbe505026997d905e2c719fc44c680e9e4921b3..3de4ee51029c154ce792ab93792ff4de65c45547 100644 (file)
--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -599,7 +599,8 @@ static int soc_tplg_kcontrol_bind_io(struct snd_soc_tplg_ctl_hdr *hdr,
 
        if (hdr->ops.info == SND_SOC_TPLG_CTL_BYTES
                && k->iface & SNDRV_CTL_ELEM_IFACE_MIXER
-               && k->access & SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE
+               && (k->access & SNDRV_CTL_ELEM_ACCESS_TLV_READ
+                   || k->access & SNDRV_CTL_ELEM_ACCESS_TLV_WRITE)
                && k->access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK) {
                struct soc_bytes_ext *sbe;
                struct snd_soc_tplg_bytes_control *be;