| Message ID | 20220201155629.120510-3-broonie@kernel.org (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 7f3d90a3519680dfa23e750f80bfdefc0f5eda4a |
| Headers | show |
| Series | ASoC: ops: Fix stereo change notifications | expand |
On 2/1/22 09:56, Mark Brown wrote: > When writing out a stereo control we discard the change notification from > the first channel, meaning that events are only generated based on changes > to the second channel. Ensure that we report a change if either channel > has changed. > > Signed-off-by: Mark Brown <broonie@kernel.org> > Cc: stable@vger.kernel.org > --- > sound/soc/soc-ops.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/sound/soc/soc-ops.c b/sound/soc/soc-ops.c > index 73c9d53de25b..f0d1aeb38346 100644 > --- a/sound/soc/soc-ops.c > +++ b/sound/soc/soc-ops.c > @@ -413,6 +413,7 @@ int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol, > int min = mc->min; > unsigned int mask = (1U << (fls(min + max) - 1)) - 1; > int err = 0; > + int ret; > unsigned int val, val_mask; > > val_mask = mask << shift; > @@ -422,6 +423,7 @@ int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol, > err = snd_soc_component_update_bits(component, reg, val_mask, val); > if (err < 0) > return err; > + ret = err; > > if (snd_soc_volsw_is_stereo(mc)) { > unsigned int val2; > @@ -432,6 +434,11 @@ int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol, > > err = snd_soc_component_update_bits(component, reg2, val_mask, > val2); > + > + /* Don't discard any error code or drop change flag */ > + if (ret == 0 || err < 0) { > + ret = err; > + } > } > return err; cppcheck flags a warning on this patch, I believe we should use "return ret;" here, as done in the other patches of this series? https://github.com/thesofproject/linux/pull/3597/commits/85b667d190953231ef314ac429019a011596f6d7
On Mon, Apr 18, 2022 at 04:33:21PM -0500, Pierre-Louis Bossart wrote: > > + if (ret == 0 || err < 0) { > > + ret = err; > > + } > > } > > return err; > cppcheck flags a warning on this patch, I believe we should use "return ret;" here, as done in the other patches of this series? Yes, I think so.
diff --git a/sound/soc/soc-ops.c b/sound/soc/soc-ops.c index 73c9d53de25b..f0d1aeb38346 100644 --- a/sound/soc/soc-ops.c +++ b/sound/soc/soc-ops.c @@ -413,6 +413,7 @@ int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol, int min = mc->min; unsigned int mask = (1U << (fls(min + max) - 1)) - 1; int err = 0; + int ret; unsigned int val, val_mask; val_mask = mask << shift; @@ -422,6 +423,7 @@ int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol, err = snd_soc_component_update_bits(component, reg, val_mask, val); if (err < 0) return err; + ret = err; if (snd_soc_volsw_is_stereo(mc)) { unsigned int val2; @@ -432,6 +434,11 @@ int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol, err = snd_soc_component_update_bits(component, reg2, val_mask, val2); + + /* Don't discard any error code or drop change flag */ + if (ret == 0 || err < 0) { + ret = err; + } } return err; }
When writing out a stereo control we discard the change notification from the first channel, meaning that events are only generated based on changes to the second channel. Ensure that we report a change if either channel has changed. Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org --- sound/soc/soc-ops.c | 7 +++++++ 1 file changed, 7 insertions(+)