[alsa-devel] [PATCH 1/2] es1688: allocate snd_es1688 structure as a part of snd_card structure
Takashi Iwai
tiwai at suse.de
Mon May 10 10:26:08 CEST 2010
At Sun, 9 May 2010 20:35:44 +0200,
Krzysztof Helt wrote:
>
> From: Krzysztof Helt <krzysztof.h1 at wp.pl>
>
> Allocate the snd_es1688 during the snd_card allocation.
> This allows to remove the card pointer from the snd_es1688 structure.
>
> Signed-off-by: Krzysztof Helt <krzysztof.h1 at wp.pl>
> ---
> This is the second version. It removes kfree(chip) as well.
>
> >> Allocate the snd_es1688 during the snd_card allocation.
> >> This allows to remove the card pointer from the snd_es1688 structure.
>
> > Any other merit?
>
> There is no real purpose of this change aside saving one allocation,
> removing one pointer from the structure and making code shorter.
OK, applied both patches now. The build test seems OK.
Thanks!
Takashi
>
> include/sound/es1688.h | 10 ++++----
> sound/isa/es1688/es1688.c | 23 ++++++++++++---------
> sound/isa/es1688/es1688_lib.c | 44 +++++++++++++---------------------------
> sound/isa/gus/gusextreme.c | 26 +++++++++++++-----------
> 4 files changed, 46 insertions(+), 57 deletions(-)
>
> diff --git a/include/sound/es1688.h b/include/sound/es1688.h
> index 10fcf14..4c29572 100644
> --- a/include/sound/es1688.h
> +++ b/include/sound/es1688.h
> @@ -44,7 +44,6 @@ struct snd_es1688 {
> unsigned char pad;
> unsigned int dma_size;
>
> - struct snd_card *card;
> struct snd_pcm *pcm;
> struct snd_pcm_substream *playback_substream;
> struct snd_pcm_substream *capture_substream;
> @@ -108,14 +107,15 @@ struct snd_es1688 {
> void snd_es1688_mixer_write(struct snd_es1688 *chip, unsigned char reg, unsigned char data);
>
> int snd_es1688_create(struct snd_card *card,
> + struct snd_es1688 *chip,
> unsigned long port,
> unsigned long mpu_port,
> int irq,
> int mpu_irq,
> int dma8,
> - unsigned short hardware,
> - struct snd_es1688 ** rchip);
> -int snd_es1688_pcm(struct snd_es1688 *chip, int device, struct snd_pcm ** rpcm);
> -int snd_es1688_mixer(struct snd_es1688 *chip);
> + unsigned short hardware);
> +int snd_es1688_pcm(struct snd_card *card, struct snd_es1688 *chip, int device,
> + struct snd_pcm **rpcm);
> +int snd_es1688_mixer(struct snd_card *card, struct snd_es1688 *chip);
>
> #endif /* __SOUND_ES1688_H */
> diff --git a/sound/isa/es1688/es1688.c b/sound/isa/es1688/es1688.c
> index 07df201..2816794 100644
> --- a/sound/isa/es1688/es1688.c
> +++ b/sound/isa/es1688/es1688.c
> @@ -79,8 +79,8 @@ static int __devinit snd_es1688_match(struct device *dev, unsigned int n)
> return enable[n];
> }
>
> -static int __devinit snd_es1688_legacy_create(struct snd_card *card,
> - struct device *dev, unsigned int n, struct snd_es1688 **rchip)
> +static int __devinit snd_es1688_legacy_create(struct snd_card *card,
> + struct snd_es1688 *chip, struct device *dev, unsigned int n)
> {
> static long possible_ports[] = {0x220, 0x240, 0x260};
> static int possible_irqs[] = {5, 9, 10, 7, -1};
> @@ -104,14 +104,14 @@ static int __devinit snd_es1688_legacy_create(struct snd_card *card,
> }
>
> if (port[n] != SNDRV_AUTO_PORT)
> - return snd_es1688_create(card, port[n], mpu_port[n], irq[n],
> - mpu_irq[n], dma8[n], ES1688_HW_AUTO, rchip);
> + return snd_es1688_create(card, chip, port[n], mpu_port[n],
> + irq[n], mpu_irq[n], dma8[n], ES1688_HW_AUTO);
>
> i = 0;
> do {
> port[n] = possible_ports[i];
> - error = snd_es1688_create(card, port[n], mpu_port[n], irq[n],
> - mpu_irq[n], dma8[n], ES1688_HW_AUTO, rchip);
> + error = snd_es1688_create(card, chip, port[n], mpu_port[n],
> + irq[n], mpu_irq[n], dma8[n], ES1688_HW_AUTO);
> } while (error < 0 && ++i < ARRAY_SIZE(possible_ports));
>
> return error;
> @@ -125,19 +125,22 @@ static int __devinit snd_es1688_probe(struct device *dev, unsigned int n)
> struct snd_pcm *pcm;
> int error;
>
> - error = snd_card_create(index[n], id[n], THIS_MODULE, 0, &card);
> + error = snd_card_create(index[n], id[n], THIS_MODULE,
> + sizeof(struct snd_es1688), &card);
> if (error < 0)
> return error;
>
> - error = snd_es1688_legacy_create(card, dev, n, &chip);
> + chip = card->private_data;
> +
> + error = snd_es1688_legacy_create(card, chip, dev, n);
> if (error < 0)
> goto out;
>
> - error = snd_es1688_pcm(chip, 0, &pcm);
> + error = snd_es1688_pcm(card, chip, 0, &pcm);
> if (error < 0)
> goto out;
>
> - error = snd_es1688_mixer(chip);
> + error = snd_es1688_mixer(card, chip);
> if (error < 0)
> goto out;
>
> diff --git a/sound/isa/es1688/es1688_lib.c b/sound/isa/es1688/es1688_lib.c
> index c76bb00..fdd4404 100644
> --- a/sound/isa/es1688/es1688_lib.c
> +++ b/sound/isa/es1688/es1688_lib.c
> @@ -620,7 +620,6 @@ static int snd_es1688_free(struct snd_es1688 *chip)
> disable_dma(chip->dma8);
> free_dma(chip->dma8);
> }
> - kfree(chip);
> return 0;
> }
>
> @@ -638,23 +637,20 @@ static const char *snd_es1688_chip_id(struct snd_es1688 *chip)
> }
>
> int snd_es1688_create(struct snd_card *card,
> + struct snd_es1688 *chip,
> unsigned long port,
> unsigned long mpu_port,
> int irq,
> int mpu_irq,
> int dma8,
> - unsigned short hardware,
> - struct snd_es1688 **rchip)
> + unsigned short hardware)
> {
> static struct snd_device_ops ops = {
> .dev_free = snd_es1688_dev_free,
> };
>
> - struct snd_es1688 *chip;
> int err;
>
> - *rchip = NULL;
> - chip = kzalloc(sizeof(*chip), GFP_KERNEL);
> if (chip == NULL)
> return -ENOMEM;
> chip->irq = -1;
> @@ -662,25 +658,21 @@ int snd_es1688_create(struct snd_card *card,
>
> if ((chip->res_port = request_region(port + 4, 12, "ES1688")) == NULL) {
> snd_printk(KERN_ERR "es1688: can't grab port 0x%lx\n", port + 4);
> - snd_es1688_free(chip);
> return -EBUSY;
> }
> if (request_irq(irq, snd_es1688_interrupt, IRQF_DISABLED, "ES1688", (void *) chip)) {
> snd_printk(KERN_ERR "es1688: can't grab IRQ %d\n", irq);
> - snd_es1688_free(chip);
> return -EBUSY;
> }
> chip->irq = irq;
> if (request_dma(dma8, "ES1688")) {
> snd_printk(KERN_ERR "es1688: can't grab DMA8 %d\n", dma8);
> - snd_es1688_free(chip);
> return -EBUSY;
> }
> chip->dma8 = dma8;
>
> spin_lock_init(&chip->reg_lock);
> spin_lock_init(&chip->mixer_lock);
> - chip->card = card;
> chip->port = port;
> mpu_port &= ~0x000f;
> if (mpu_port < 0x300 || mpu_port > 0x330)
> @@ -689,23 +681,16 @@ int snd_es1688_create(struct snd_card *card,
> chip->mpu_irq = mpu_irq;
> chip->hardware = hardware;
>
> - if ((err = snd_es1688_probe(chip)) < 0) {
> - snd_es1688_free(chip);
> + err = snd_es1688_probe(chip);
> + if (err < 0)
> return err;
> - }
> - if ((err = snd_es1688_init(chip, 1)) < 0) {
> - snd_es1688_free(chip);
> - return err;
> - }
>
> - /* Register device */
> - if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
> - snd_es1688_free(chip);
> + err = snd_es1688_init(chip, 1);
> + if (err < 0)
> return err;
> - }
>
> - *rchip = chip;
> - return 0;
> + /* Register device */
> + return snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
> }
>
> static struct snd_pcm_ops snd_es1688_playback_ops = {
> @@ -730,12 +715,14 @@ static struct snd_pcm_ops snd_es1688_capture_ops = {
> .pointer = snd_es1688_capture_pointer,
> };
>
> -int snd_es1688_pcm(struct snd_es1688 * chip, int device, struct snd_pcm ** rpcm)
> +int snd_es1688_pcm(struct snd_card *card, struct snd_es1688 *chip,
> + int device, struct snd_pcm **rpcm)
> {
> struct snd_pcm *pcm;
> int err;
>
> - if ((err = snd_pcm_new(chip->card, "ESx688", device, 1, 1, &pcm)) < 0)
> + err = snd_pcm_new(card, "ESx688", device, 1, 1, &pcm);
> + if (err < 0)
> return err;
>
> snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_es1688_playback_ops);
> @@ -1009,18 +996,15 @@ static unsigned char snd_es1688_init_table[][2] = {
> { ES1688_REC_DEV, 0x17 }
> };
>
> -int snd_es1688_mixer(struct snd_es1688 *chip)
> +int snd_es1688_mixer(struct snd_card *card, struct snd_es1688 *chip)
> {
> - struct snd_card *card;
> unsigned int idx;
> int err;
> unsigned char reg, val;
>
> - if (snd_BUG_ON(!chip || !chip->card))
> + if (snd_BUG_ON(!chip || !card))
> return -EINVAL;
>
> - card = chip->card;
> -
> strcpy(card->mixername, snd_es1688_chip_id(chip));
>
> for (idx = 0; idx < ARRAY_SIZE(snd_es1688_controls); idx++) {
> diff --git a/sound/isa/gus/gusextreme.c b/sound/isa/gus/gusextreme.c
> index 65e4b18..008e8e5 100644
> --- a/sound/isa/gus/gusextreme.c
> +++ b/sound/isa/gus/gusextreme.c
> @@ -95,7 +95,7 @@ static int __devinit snd_gusextreme_match(struct device *dev, unsigned int n)
> }
>
> static int __devinit snd_gusextreme_es1688_create(struct snd_card *card,
> - struct device *dev, unsigned int n, struct snd_es1688 **rchip)
> + struct snd_es1688 *chip, struct device *dev, unsigned int n)
> {
> static long possible_ports[] = {0x220, 0x240, 0x260};
> static int possible_irqs[] = {5, 9, 10, 7, -1};
> @@ -119,14 +119,14 @@ static int __devinit snd_gusextreme_es1688_create(struct snd_card *card,
> }
>
> if (port[n] != SNDRV_AUTO_PORT)
> - return snd_es1688_create(card, port[n], mpu_port[n], irq[n],
> - mpu_irq[n], dma8[n], ES1688_HW_1688, rchip);
> + return snd_es1688_create(card, chip, port[n], mpu_port[n],
> + irq[n], mpu_irq[n], dma8[n], ES1688_HW_1688);
>
> i = 0;
> do {
> port[n] = possible_ports[i];
> - error = snd_es1688_create(card, port[n], mpu_port[n], irq[n],
> - mpu_irq[n], dma8[n], ES1688_HW_1688, rchip);
> + error = snd_es1688_create(card, chip, port[n], mpu_port[n],
> + irq[n], mpu_irq[n], dma8[n], ES1688_HW_1688);
> } while (error < 0 && ++i < ARRAY_SIZE(possible_ports));
>
> return error;
> @@ -206,9 +206,8 @@ static int __devinit snd_gusextreme_detect(struct snd_gus_card *gus,
> return 0;
> }
>
> -static int __devinit snd_gusextreme_mixer(struct snd_es1688 *chip)
> +static int __devinit snd_gusextreme_mixer(struct snd_card *card)
> {
> - struct snd_card *card = chip->card;
> struct snd_ctl_elem_id id1, id2;
> int error;
>
> @@ -241,17 +240,20 @@ static int __devinit snd_gusextreme_probe(struct device *dev, unsigned int n)
> struct snd_opl3 *opl3;
> int error;
>
> - error = snd_card_create(index[n], id[n], THIS_MODULE, 0, &card);
> + error = snd_card_create(index[n], id[n], THIS_MODULE,
> + sizeof(struct snd_es1688), &card);
> if (error < 0)
> return error;
>
> + es1688 = card->private_data;
> +
> if (mpu_port[n] == SNDRV_AUTO_PORT)
> mpu_port[n] = 0;
>
> if (mpu_irq[n] > 15)
> mpu_irq[n] = -1;
>
> - error = snd_gusextreme_es1688_create(card, dev, n, &es1688);
> + error = snd_gusextreme_es1688_create(card, es1688, dev, n);
> if (error < 0)
> goto out;
>
> @@ -280,11 +282,11 @@ static int __devinit snd_gusextreme_probe(struct device *dev, unsigned int n)
> }
> gus->codec_flag = 1;
>
> - error = snd_es1688_pcm(es1688, 0, NULL);
> + error = snd_es1688_pcm(card, es1688, 0, NULL);
> if (error < 0)
> goto out;
>
> - error = snd_es1688_mixer(es1688);
> + error = snd_es1688_mixer(card, es1688);
> if (error < 0)
> goto out;
>
> @@ -300,7 +302,7 @@ static int __devinit snd_gusextreme_probe(struct device *dev, unsigned int n)
> if (error < 0)
> goto out;
>
> - error = snd_gusextreme_mixer(es1688);
> + error = snd_gusextreme_mixer(card);
> if (error < 0)
> goto out;
>
> --
> 1.6.4
>
>
> ----------------------------------------------------------------------
> Sprawdź jak dać rodzinie poczucie bezpieczeństwa.
> http://clk.tradedoubler.com/click?p=191431&a=1694818&g=18733532
>
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