[PATCH] ASoC: fsl: fix pm support of machine drivers
Nicolin Chen
Guangyu.Chen at freescale.com
Sat Feb 8 00:26:43 EST 2014
On Sat, Feb 08, 2014 at 01:20:35PM +0800, Shawn Guo wrote:
> The commit 1abe729 (ASoC: fsl: Add missing pm to current machine
> drivers) enables pm support for a few IMX machine drivers. But it does
> not update dev drvdata to be the pointer to 'card'. This causes the
Right...I forgot to merge this part.
> kernel dump below in system suspend, because snd_soc_suspend() expects
> that the dev drvdata points to 'card', while it still points to the
> private data of machine driver.
>
> This patch fixes imx-sgtl5000 and imx-wm8962 by attaching 'card' to dev
> drvdata and private data to card drvdata. For imx-mc13783, I simply
> revert the pm change because it must be broken for the same reason and
> I don't have hardware to test pm enabling code.
Thank you Shawn, and sorry for screwing up.
Nicolin Chen
---
>
> $ echo mem > /sys/power/state
> PM: Syncing filesystems ... done.
> PM: Preparing system for mem sleep
> mmc1: card e624 removed
> Freezing user space processes ... (elapsed 0.002 seconds) done.
> Freezing remaining freezable tasks ... (elapsed 0.002 seconds) done.
> PM: Entering mem sleep
> INFO: trying to register non-static key.
> the code is fine but needs lockdep annotation.
> turning off the locking correctness validator.
> CPU: 0 PID: 1861 Comm: bash Not tainted 3.14.0-rc1+ #1648
> Backtrace:
> [<80012144>] (dump_backtrace) from [<800122e4>] (show_stack+0x18/0x1c)
> r6:8079c77c r5:00000c5a r4:00000000 r3:00000000
> [<800122cc>] (show_stack) from [<80637ac0>] (dump_stack+0x78/0x94)
> [<80637a48>] (dump_stack) from [<80028918>] (warn_slowpath_common+0x6c/0x8c)
> r4:bdb21c38 r3:be62df00
> [<800288ac>] (warn_slowpath_common) from [<800289dc>] (warn_slowpath_fmt+0x38/0x40)
> r8:be62e3a8 r7:bf122960 r6:00000005 r5:00000000 r4:00000000
> [<800289a8>] (warn_slowpath_fmt) from [<8006518c>] (__lock_acquire+0x1ae0/0x1ce0)
> r3:8079d598 r2:80799e70
> [<800636ac>] (__lock_acquire) from [<80065894>] (lock_acquire+0x68/0x7c)
> r10:bdb20000 r9:be62df00 r8:00000000 r7:00000000 r6:60000013 r5:bdb20000
> r4:00000000
> [<8006582c>] (lock_acquire) from [<8063c938>] (mutex_lock_nested+0x5c/0x3b8)
> r7:00000000 r6:80dfc78c r5:804be444 r4:bf122928
> [<8063c8dc>] (mutex_lock_nested) from [<804be444>] (snd_soc_suspend+0x34/0x42c)
> r10:00000000 r9:00000000 r8:00000000 r7:bf1c4444 r6:bf1c4410 r5:be978150
> r4:be978010
> [<804be410>] (snd_soc_suspend) from [<8034392c>] (platform_pm_suspend+0x34/0x64)
> r10:00000000 r8:00000000 r7:bf1c4444 r6:bf1c4410 r5:803438f8 r4:bf1c4410
> [<803438f8>] (platform_pm_suspend) from [<80348e18>] (dpm_run_callback.isra.7+0x34/0x6c)
> [<80348de4>] (dpm_run_callback.isra.7) from [<80349354>] (__device_suspend+0x10c/0x220)
> r9:808dd974 r8:808c4a5c r6:00000002 r5:80e5001c r4:bf1c4410
> [<80349248>] (__device_suspend) from [<8034a338>] (dpm_suspend+0x60/0x220)
> r7:bf1c4410 r6:808dd90c r5:80e5001c r4:bf1c44c0
> [<8034a2d8>] (dpm_suspend) from [<8034a790>] (dpm_suspend_start+0x60/0x68)
> r10:8079a818 r9:00000000 r8:00000004 r7:80dfbe90 r6:80641eec r5:00000000
> r4:00000002
> [<8034a730>] (dpm_suspend_start) from [<8006a788>] (suspend_devices_and_enter+0x74/0x318)
> r4:00000003 r3:80dfbe98
> [<8006a714>] (suspend_devices_and_enter) from [<8006abd8>] (pm_suspend+0x1ac/0x244)
> r10:8079a818 r8:00000004 r7:00000003 r6:80641eec r5:00000000 r4:00000003
> [<8006aa2c>] (pm_suspend) from [<80069a4c>] (state_store+0x70/0xc0)
> r5:00000003 r4:bd85ea40
> [<800699dc>] (state_store) from [<80294034>] (kobj_attr_store+0x1c/0x28)
> r10:beb9fe08 r8:00000000 r7:bdb21f78 r6:bd85ea40 r5:00000004 r4:beb9fe00
> [<80294018>] (kobj_attr_store) from [<80140f90>] (sysfs_kf_write+0x54/0x58)
> [<80140f3c>] (sysfs_kf_write) from [<8014474c>] (kernfs_fop_write+0xc4/0x160)
> r6:bd85ea40 r5:beb9fe00 r4:00000004 r3:80140f3c
> [<80144688>] (kernfs_fop_write) from [<800dfa14>] (vfs_write+0xbc/0x184)
> r10:00000000 r9:00000000 r8:00000000 r7:bdb21f78 r6:00500c08 r5:00000004
> r4:be782600
> [<800df958>] (vfs_write) from [<800dfe00>] (SyS_write+0x48/0x70)
> r10:00000000 r8:00000000 r7:00000004 r6:00500c08 r5:00000000 r4:be782600
> [<800dfdb8>] (SyS_write) from [<8000e800>] (ret_fast_syscall+0x0/0x48)
> r9:bdb20000 r8:8000e9c4 r7:00000004 r6:00500c08 r5:00000004 r4:76eb65e0
>
> Fixes: 1abe729 (ASoC: fsl: Add missing pm to current machine drivers)
> Cc: stable at vger.kernel.org
> Signed-off-by: Shawn Guo <shawn.guo at linaro.org>
> ---
> sound/soc/fsl/imx-mc13783.c | 1 -
> sound/soc/fsl/imx-sgtl5000.c | 10 ++++++----
> sound/soc/fsl/imx-wm8962.c | 11 +++++++----
> 3 files changed, 13 insertions(+), 9 deletions(-)
>
> diff --git a/sound/soc/fsl/imx-mc13783.c b/sound/soc/fsl/imx-mc13783.c
> index 79cee78..a2fd732 100644
> --- a/sound/soc/fsl/imx-mc13783.c
> +++ b/sound/soc/fsl/imx-mc13783.c
> @@ -160,7 +160,6 @@ static struct platform_driver imx_mc13783_audio_driver = {
> .driver = {
> .name = "imx_mc13783",
> .owner = THIS_MODULE,
> - .pm = &snd_soc_pm_ops,
> },
> .probe = imx_mc13783_probe,
> .remove = imx_mc13783_remove
> diff --git a/sound/soc/fsl/imx-sgtl5000.c b/sound/soc/fsl/imx-sgtl5000.c
> index f2beae7..1cb22dd 100644
> --- a/sound/soc/fsl/imx-sgtl5000.c
> +++ b/sound/soc/fsl/imx-sgtl5000.c
> @@ -33,8 +33,7 @@ struct imx_sgtl5000_data {
>
> static int imx_sgtl5000_dai_init(struct snd_soc_pcm_runtime *rtd)
> {
> - struct imx_sgtl5000_data *data = container_of(rtd->card,
> - struct imx_sgtl5000_data, card);
> + struct imx_sgtl5000_data *data = snd_soc_card_get_drvdata(rtd->card);
> struct device *dev = rtd->card->dev;
> int ret;
>
> @@ -159,13 +158,15 @@ static int imx_sgtl5000_probe(struct platform_device *pdev)
> data->card.dapm_widgets = imx_sgtl5000_dapm_widgets;
> data->card.num_dapm_widgets = ARRAY_SIZE(imx_sgtl5000_dapm_widgets);
>
> + platform_set_drvdata(pdev, &data->card);
> + snd_soc_card_set_drvdata(&data->card, data);
> +
> ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
> if (ret) {
> dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
> goto fail;
> }
>
> - platform_set_drvdata(pdev, data);
> of_node_put(ssi_np);
> of_node_put(codec_np);
>
> @@ -184,7 +185,8 @@ fail:
>
> static int imx_sgtl5000_remove(struct platform_device *pdev)
> {
> - struct imx_sgtl5000_data *data = platform_get_drvdata(pdev);
> + struct snd_soc_card *card = platform_get_drvdata(pdev);
> + struct imx_sgtl5000_data *data = snd_soc_card_get_drvdata(card);
>
> clk_put(data->codec_clk);
>
> diff --git a/sound/soc/fsl/imx-wm8962.c b/sound/soc/fsl/imx-wm8962.c
> index 3fd76bc..3a3d17c 100644
> --- a/sound/soc/fsl/imx-wm8962.c
> +++ b/sound/soc/fsl/imx-wm8962.c
> @@ -71,7 +71,7 @@ static int imx_wm8962_set_bias_level(struct snd_soc_card *card,
> {
> struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
> struct imx_priv *priv = &card_priv;
> - struct imx_wm8962_data *data = platform_get_drvdata(priv->pdev);
> + struct imx_wm8962_data *data = snd_soc_card_get_drvdata(card);
> struct device *dev = &priv->pdev->dev;
> unsigned int pll_out;
> int ret;
> @@ -137,7 +137,7 @@ static int imx_wm8962_late_probe(struct snd_soc_card *card)
> {
> struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
> struct imx_priv *priv = &card_priv;
> - struct imx_wm8962_data *data = platform_get_drvdata(priv->pdev);
> + struct imx_wm8962_data *data = snd_soc_card_get_drvdata(card);
> struct device *dev = &priv->pdev->dev;
> int ret;
>
> @@ -264,13 +264,15 @@ static int imx_wm8962_probe(struct platform_device *pdev)
> data->card.late_probe = imx_wm8962_late_probe;
> data->card.set_bias_level = imx_wm8962_set_bias_level;
>
> + platform_set_drvdata(pdev, &data->card);
> + snd_soc_card_set_drvdata(&data->card, data);
> +
> ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
> if (ret) {
> dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
> goto clk_fail;
> }
>
> - platform_set_drvdata(pdev, data);
> of_node_put(ssi_np);
> of_node_put(codec_np);
>
> @@ -289,7 +291,8 @@ fail:
>
> static int imx_wm8962_remove(struct platform_device *pdev)
> {
> - struct imx_wm8962_data *data = platform_get_drvdata(pdev);
> + struct snd_soc_card *card = platform_get_drvdata(pdev);
> + struct imx_wm8962_data *data = snd_soc_card_get_drvdata(card);
>
> if (!IS_ERR(data->codec_clk))
> clk_disable_unprepare(data->codec_clk);
> --
> 1.7.9.5
>
>
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