From: Phillip Potter phil@philpotter.co.uk

[ Upstream commit 5e70b8e22b64eed13d5bbebcb5911dae65bf8c6b ]

Check for return value from various snd_soc_dapm_* calls, as many of them can return errors and this should be handled. Also, reintroduce the allocation failure check for rt5645->eq_param as well. Make all areas where return values are checked lead to the end of the function in the case of an error. Finally, introduce a comment explaining how resources here are actually eventually cleaned up by the caller.

Cc: Mark Brown broonie@kernel.org Signed-off-by: Phillip Potter phil@philpotter.co.uk Link: https://lore.kernel.org/r/20210503115736.2104747-56-gregkh@linuxfoundation.o... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- sound/soc/codecs/rt5645.c | 48 +++++++++++++++++++++++++++++++-------- 1 file changed, 39 insertions(+), 9 deletions(-)

diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c index 9185bd7c5a6d..d8b941bb9f8a 100644 --- a/sound/soc/codecs/rt5645.c +++ b/sound/soc/codecs/rt5645.c @@ -3413,30 +3413,44 @@ static int rt5645_probe(struct snd_soc_component *component) { struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); struct rt5645_priv *rt5645 = snd_soc_component_get_drvdata(component); + int ret = 0;

rt5645->component = component;

switch (rt5645->codec_type) { case CODEC_TYPE_RT5645: - snd_soc_dapm_new_controls(dapm, + ret = snd_soc_dapm_new_controls(dapm, rt5645_specific_dapm_widgets, ARRAY_SIZE(rt5645_specific_dapm_widgets)); - snd_soc_dapm_add_routes(dapm, + if (ret < 0) + goto exit; + + ret = snd_soc_dapm_add_routes(dapm, rt5645_specific_dapm_routes, ARRAY_SIZE(rt5645_specific_dapm_routes)); + if (ret < 0) + goto exit; + if (rt5645->v_id < 3) { - snd_soc_dapm_add_routes(dapm, + ret = snd_soc_dapm_add_routes(dapm, rt5645_old_dapm_routes, ARRAY_SIZE(rt5645_old_dapm_routes)); + if (ret < 0) + goto exit; } break; case CODEC_TYPE_RT5650: - snd_soc_dapm_new_controls(dapm, + ret = snd_soc_dapm_new_controls(dapm, rt5650_specific_dapm_widgets, ARRAY_SIZE(rt5650_specific_dapm_widgets)); - snd_soc_dapm_add_routes(dapm, + if (ret < 0) + goto exit; + + ret = snd_soc_dapm_add_routes(dapm, rt5650_specific_dapm_routes, ARRAY_SIZE(rt5650_specific_dapm_routes)); + if (ret < 0) + goto exit; break; }

@@ -3444,9 +3458,17 @@ static int rt5645_probe(struct snd_soc_component *component)

/* for JD function */ if (rt5645->pdata.jd_mode) { - snd_soc_dapm_force_enable_pin(dapm, "JD Power"); - snd_soc_dapm_force_enable_pin(dapm, "LDO2"); - snd_soc_dapm_sync(dapm); + ret = snd_soc_dapm_force_enable_pin(dapm, "JD Power"); + if (ret < 0) + goto exit; + + ret = snd_soc_dapm_force_enable_pin(dapm, "LDO2"); + if (ret < 0) + goto exit; + + ret = snd_soc_dapm_sync(dapm); + if (ret < 0) + goto exit; }

if (rt5645->pdata.long_name) @@ -3456,7 +3478,15 @@ static int rt5645_probe(struct snd_soc_component *component) RT5645_HWEQ_NUM, sizeof(struct rt5645_eq_param_s), GFP_KERNEL);

- return 0; + if (!rt5645->eq_param) + ret = -ENOMEM; +exit: + /* + * If there was an error above, everything will be cleaned up by the + * caller if we return an error here. This will be done with a later + * call to rt5645_remove(). + */ + return ret; }

static void rt5645_remove(struct snd_soc_component *component)