Re: [PATCH v3 07/10] topology: decode: Fix decoding PCM formats and rates

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On 7/14/20 6:25 AM, Piotr Maziarz wrote:
Not checking _LAST format and rate, which are valid indexes in arrays,
makes data loss while converting binary to standard ALSA configuration
file.

I must be really thick on this one.

alsatplg converts from alsa-conf format to binary topology file.
The binary topology file is used by drivers.

In which cases would you convert from binary to alsa-conf files? And what tool would you use?


Signed-off-by: Piotr Maziarz <piotrx.maziarz@xxxxxxxxxxxxxxx>
---
  src/topology/pcm.c | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/topology/pcm.c b/src/topology/pcm.c
index b15b950..db40114 100644
--- a/src/topology/pcm.c
+++ b/src/topology/pcm.c
@@ -549,7 +549,7 @@ int tplg_save_stream_caps(snd_tplg_t *tplg ATTRIBUTE_UNUSED,
  	if (err >= 0 && sc->formats) {
  		err = tplg_save_printf(dst, pfx, "\tformats '");
  		first = 1;
-		for (i = 0; err >= 0 && i < SND_PCM_FORMAT_LAST; i++) {
+		for (i = 0; err >= 0 && i <= SND_PCM_FORMAT_LAST; i++) {
  			if (sc->formats & (1ULL << i)) {
  				s = snd_pcm_format_name(i);
  				err = tplg_save_printf(dst, NULL, "%s%s",
@@ -563,7 +563,7 @@ int tplg_save_stream_caps(snd_tplg_t *tplg ATTRIBUTE_UNUSED,
  	if (err >= 0 && sc->rates) {
  		err = tplg_save_printf(dst, pfx, "\trates '");
  		first = 1;
-		for (i = 0; err >= 0 && i < SND_PCM_RATE_LAST; i++) {
+		for (i = 0; err >= 0 && i <= SND_PCM_RATE_LAST; i++) {
  			if (sc->rates & (1ULL << i)) {
  				s = get_rate_name(i);
  				err = tplg_save_printf(dst, NULL, "%s%s",




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