From 7a6a723e98aa45f393e6add18f7309dfffa1b0e2 Mon Sep 17 00:00:00 2001 From: Christophe JAILLET Date: Mon, 16 Aug 2021 07:25:10 +0200 Subject: ASoC: wcd9335: Fix a double irq free in the remove function There is no point in calling 'free_irq()' explicitly for 'WCD9335_IRQ_SLIMBUS' in the remove function. The irqs are requested in 'wcd9335_setup_irqs()' using a resource managed function (i.e. 'devm_request_threaded_irq()'). 'wcd9335_setup_irqs()' requests all what is defined in the 'wcd9335_irqs' structure. This structure has only one entry for 'WCD9335_IRQ_SLIMBUS'. So 'devm_request...irq()' + explicit 'free_irq()' would lead to a double free. Remove the unneeded 'free_irq()' from the remove function. Fixes: 20aedafdf492 ("ASoC: wcd9335: add support to wcd9335 codec") Signed-off-by: Christophe JAILLET Message-Id: <0614d63bc00edd7e81dd367504128f3d84f72efa.1629091028.git.christophe.jaillet@wanadoo.fr> Signed-off-by: Mark Brown --- sound/soc/codecs/wcd9335.c | 1 - 1 file changed, 1 deletion(-) (limited to 'sound/soc') diff --git a/sound/soc/codecs/wcd9335.c b/sound/soc/codecs/wcd9335.c index 86c92e03ea5d..933f59e4e56f 100644 --- a/sound/soc/codecs/wcd9335.c +++ b/sound/soc/codecs/wcd9335.c @@ -4869,7 +4869,6 @@ static void wcd9335_codec_remove(struct snd_soc_component *comp) struct wcd9335_codec *wcd = dev_get_drvdata(comp->dev); wcd_clsh_ctrl_free(wcd->clsh_ctrl); - free_irq(regmap_irq_get_virq(wcd->irq_data, WCD9335_IRQ_SLIMBUS), wcd); } static int wcd9335_codec_set_sysclk(struct snd_soc_component *comp, -- cgit v1.2.3 From fc6fc81caa63900cef9ebb8b2e365c3ed5a9effb Mon Sep 17 00:00:00 2001 From: Christophe JAILLET Date: Mon, 16 Aug 2021 07:25:20 +0200 Subject: ASoC: wcd9335: Fix a memory leak in the error handling path of the probe function If 'wcd9335_setup_irqs()' fails, me must release the memory allocated in 'wcd_clsh_ctrl_alloc()', as already done in the remove function. Add an error handling path and the missing 'wcd_clsh_ctrl_free()' call. Fixes: 20aedafdf492 ("ASoC: wcd9335: add support to wcd9335 codec") Signed-off-by: Christophe JAILLET Message-Id: <6dc12372f09fabb70bf05941dbe6a1382dc93e43.1629091028.git.christophe.jaillet@wanadoo.fr> Signed-off-by: Mark Brown --- sound/soc/codecs/wcd9335.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'sound/soc') diff --git a/sound/soc/codecs/wcd9335.c b/sound/soc/codecs/wcd9335.c index 933f59e4e56f..47fe68edea3a 100644 --- a/sound/soc/codecs/wcd9335.c +++ b/sound/soc/codecs/wcd9335.c @@ -4844,6 +4844,7 @@ static void wcd9335_codec_init(struct snd_soc_component *component) static int wcd9335_codec_probe(struct snd_soc_component *component) { struct wcd9335_codec *wcd = dev_get_drvdata(component->dev); + int ret; int i; snd_soc_component_init_regmap(component, wcd->regmap); @@ -4861,7 +4862,15 @@ static int wcd9335_codec_probe(struct snd_soc_component *component) for (i = 0; i < NUM_CODEC_DAIS; i++) INIT_LIST_HEAD(&wcd->dai[i].slim_ch_list); - return wcd9335_setup_irqs(wcd); + ret = wcd9335_setup_irqs(wcd); + if (ret) + goto free_clsh_ctrl; + + return 0; + +free_clsh_ctrl: + wcd_clsh_ctrl_free(wcd->clsh_ctrl); + return ret; } static void wcd9335_codec_remove(struct snd_soc_component *comp) -- cgit v1.2.3 From d3efd26af2e044ff2b48d38bb871630282d77e60 Mon Sep 17 00:00:00 2001 From: Christophe JAILLET Date: Mon, 16 Aug 2021 07:25:28 +0200 Subject: ASoC: wcd9335: Disable irq on slave ports in the remove function The probe calls 'wcd9335_setup_irqs()' to enable interrupts on all slave ports. This must be undone in the remove function. Add a 'wcd9335_teardown_irqs()' function that undoes 'wcd9335_setup_irqs()' function, and call it from the remove function. Fixes: 20aedafdf492 ("ASoC: wcd9335: add support to wcd9335 codec") Signed-off-by: Christophe JAILLET Message-Id: <8f761244d79bd4c098af8a482be9121d3a486d1b.1629091028.git.christophe.jaillet@wanadoo.fr> Signed-off-by: Mark Brown --- sound/soc/codecs/wcd9335.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'sound/soc') diff --git a/sound/soc/codecs/wcd9335.c b/sound/soc/codecs/wcd9335.c index 47fe68edea3a..d885ced34f60 100644 --- a/sound/soc/codecs/wcd9335.c +++ b/sound/soc/codecs/wcd9335.c @@ -4076,6 +4076,16 @@ static int wcd9335_setup_irqs(struct wcd9335_codec *wcd) return ret; } +static void wcd9335_teardown_irqs(struct wcd9335_codec *wcd) +{ + int i; + + /* disable interrupts on all slave ports */ + for (i = 0; i < WCD9335_SLIM_NUM_PORT_REG; i++) + regmap_write(wcd->if_regmap, WCD9335_SLIM_PGD_PORT_INT_EN0 + i, + 0x00); +} + static void wcd9335_cdc_sido_ccl_enable(struct wcd9335_codec *wcd, bool ccl_flag) { @@ -4878,6 +4888,7 @@ static void wcd9335_codec_remove(struct snd_soc_component *comp) struct wcd9335_codec *wcd = dev_get_drvdata(comp->dev); wcd_clsh_ctrl_free(wcd->clsh_ctrl); + wcd9335_teardown_irqs(wcd); } static int wcd9335_codec_set_sysclk(struct snd_soc_component *comp, -- cgit v1.2.3