diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0392-staging-bcm2835-audio-Use-card-private_data.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-4.19/950-0392-staging-bcm2835-audio-Use-card-private_data.patch | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0392-staging-bcm2835-audio-Use-card-private_data.patch b/target/linux/bcm27xx/patches-4.19/950-0392-staging-bcm2835-audio-Use-card-private_data.patch new file mode 100644 index 0000000000..d4d61ce0fb --- /dev/null +++ b/target/linux/bcm27xx/patches-4.19/950-0392-staging-bcm2835-audio-Use-card-private_data.patch @@ -0,0 +1,138 @@ +From af0ded6e9dd38f08a9ee621066e583b5cf972926 Mon Sep 17 00:00:00 2001 +From: Takashi Iwai <tiwai@suse.de> +Date: Tue, 4 Sep 2018 17:58:50 +0200 +Subject: [PATCH] staging: bcm2835-audio: Use card->private_data + +commit 898001a0c845cefe5d47d133485712412853f0a8 upstream. + +Instead of allocating a separate snd_device object, let snd_card_new() +allocate the private resource. This simplifies the code. + +Signed-off-by: Takashi Iwai <tiwai@suse.de> +Tested-by: Stefan Wahren <stefan.wahren@i2se.com> +Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> +--- + .../vc04_services/bcm2835-audio/bcm2835.c | 91 +++---------------- + 1 file changed, 13 insertions(+), 78 deletions(-) + +--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c ++++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c +@@ -86,9 +86,6 @@ static int bcm2835_devm_add_vchi_ctx(str + + static void snd_bcm2835_release(struct device *dev) + { +- struct bcm2835_chip *chip = dev_get_drvdata(dev); +- +- kfree(chip); + } + + static struct device * +@@ -117,69 +114,6 @@ snd_create_device(struct device *parent, + return device; + } + +-/* component-destructor +- * (see "Management of Cards and Components") +- */ +-static int snd_bcm2835_dev_free(struct snd_device *device) +-{ +- struct bcm2835_chip *chip = device->device_data; +- struct snd_card *card = chip->card; +- +- snd_device_free(card, chip); +- +- return 0; +-} +- +-/* chip-specific constructor +- * (see "Management of Cards and Components") +- */ +-static int snd_bcm2835_create(struct snd_card *card, +- struct bcm2835_chip **rchip) +-{ +- struct bcm2835_chip *chip; +- int err; +- static struct snd_device_ops ops = { +- .dev_free = snd_bcm2835_dev_free, +- }; +- +- *rchip = NULL; +- +- chip = kzalloc(sizeof(*chip), GFP_KERNEL); +- if (!chip) +- return -ENOMEM; +- +- chip->card = card; +- mutex_init(&chip->audio_mutex); +- +- chip->vchi_ctx = devres_find(card->dev->parent, +- bcm2835_devm_free_vchi_ctx, NULL, NULL); +- if (!chip->vchi_ctx) { +- kfree(chip); +- return -ENODEV; +- } +- +- err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops); +- if (err) { +- kfree(chip); +- return err; +- } +- +- *rchip = chip; +- return 0; +-} +- +-static struct snd_card *snd_bcm2835_card_new(struct device *dev) +-{ +- struct snd_card *card; +- int ret; +- +- ret = snd_card_new(dev, -1, NULL, THIS_MODULE, 0, &card); +- if (ret) +- return ERR_PTR(ret); +- +- return card; +-} +- + typedef int (*bcm2835_audio_newpcm_func)(struct bcm2835_chip *chip, + const char *name, + enum snd_bcm2835_route route, +@@ -292,25 +226,26 @@ static int snd_add_child_device(struct d + return PTR_ERR(child); + } + +- card = snd_bcm2835_card_new(child); +- if (IS_ERR(card)) { ++ err = snd_card_new(child, -1, NULL, THIS_MODULE, sizeof(*chip), &card); ++ if (err < 0) { + dev_err(child, "Failed to create card"); +- return PTR_ERR(card); ++ return err; + } + +- snd_card_set_dev(card, child); ++ chip = card->private_data; ++ chip->card = card; ++ chip->dev = child; ++ mutex_init(&chip->audio_mutex); ++ ++ chip->vchi_ctx = devres_find(device, ++ bcm2835_devm_free_vchi_ctx, NULL, NULL); ++ if (!chip->vchi_ctx) ++ return -ENODEV; ++ + strcpy(card->driver, audio_driver->driver.name); + strcpy(card->shortname, audio_driver->shortname); + strcpy(card->longname, audio_driver->longname); + +- err = snd_bcm2835_create(card, &chip); +- if (err) { +- dev_err(child, "Failed to create chip, error %d\n", err); +- return err; +- } +- +- chip->dev = child; +- + err = audio_driver->newpcm(chip, audio_driver->shortname, + audio_driver->route, + numchans); |