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Message-ID: <s5hfxtohh7z.wl%tiwai@suse.de>
Date:	Mon, 14 Apr 2008 12:18:56 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Pavel Machek <pavel@...e.cz>
Cc:	perex@...ex.cz, kernel list <linux-kernel@...r.kernel.org>,
	Trivial patch monkey <trivial@...nel.org>
Subject: Re: sound/usb/usbaudio.c: coding style

Hi,

just back from vacation and struggling with pending patches...

At Sat, 29 Mar 2008 22:09:28 +0100,
Pavel Machek wrote:
> 
> 
> Putting space between ! and variable is a strange coding style, fix
> that, also make it fit into 80 columns where that is easy.
> 
> Signed-off-by: Pavel Machek <pavel@...e.cz>

Applied to ALSA tree now (with a fix for a coding issue you introduced
;).  Thanks.


Takashi

> 
> diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
> index f48838a..8056d8a 100644
> --- a/sound/usb/usbaudio.c
> +++ b/sound/usb/usbaudio.c
> @@ -64,9 +67,10 @@ MODULE_SUPPORTED_DEVICE("{{Generic,USB A
>  
>  static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
>  static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
> -static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable this card */
> -static int vid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; /* Vendor ID for this card */
> -static int pid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; /* Product ID for this card */
> +static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;/* Enable this card */
> +/* Vendor/product IDs for this card */
> +static int vid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 };
> +static int pid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 };
>  static int nrpacks = 8;		/* max. number of packets per urb */
>  static int async_unlink = 1;
>  static int device_setup[SNDRV_CARDS]; /* device parameter for this card*/
> @@ -687,7 +691,7 @@ static void snd_complete_urb(struct urb 
>  	int err = 0;
>  
>  	if ((subs->running && subs->ops.retire(subs, substream->runtime, urb)) ||
> -	    ! subs->running || /* can be stopped during retire callback */
> +	    !subs->running || /* can be stopped during retire callback */
>  	    (err = subs->ops.prepare(subs, substream->runtime, urb)) < 0 ||
>  	    (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
>  		clear_bit(ctx->index, &subs->active_mask);
> @@ -710,7 +714,7 @@ static void snd_complete_sync_urb(struct
>  	int err = 0;
>  
>  	if ((subs->running && subs->ops.retire_sync(subs, substream->runtime, urb)) ||
> -	    ! subs->running || /* can be stopped during retire callback */
> +	    !subs->running || /* can be stopped during retire callback */
>  	    (err = subs->ops.prepare_sync(subs, substream->runtime, urb)) < 0 ||
>  	    (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
>  		clear_bit(ctx->index + 16, &subs->active_mask);
> @@ -740,7 +744,7 @@ static int snd_pcm_alloc_vmalloc_buffer(
>  		vfree(runtime->dma_area);
>  	}
>  	runtime->dma_area = vmalloc(size);
> -	if (! runtime->dma_area)
> +	if (!runtime->dma_area)
>  		return -ENOMEM;
>  	runtime->dma_bytes = size;
>  	return 0;
> @@ -772,12 +776,12 @@ static int deactivate_urbs(struct snd_us
>  
>  	async = !can_sleep && async_unlink;
>  
> -	if (! async && in_interrupt())
> +	if (!async && in_interrupt())
>  		return 0;
>  
>  	for (i = 0; i < subs->nurbs; i++) {
>  		if (test_bit(i, &subs->active_mask)) {
> -			if (! test_and_set_bit(i, &subs->unlink_mask)) {
> +			if (!test_and_set_bit(i, &subs->unlink_mask)) {
>  				struct urb *u = subs->dataurb[i].urb;
>  				if (async)
>  					usb_unlink_urb(u);
> @@ -789,7 +793,7 @@ static int deactivate_urbs(struct snd_us
>  	if (subs->syncpipe) {
>  		for (i = 0; i < SYNC_URBS; i++) {
>  			if (test_bit(i+16, &subs->active_mask)) {
> - 				if (! test_and_set_bit(i+16, &subs->unlink_mask)) {
> + 				if (!test_and_set_bit(i+16, &subs->unlink_mask)) {
>  					struct urb *u = subs->syncurb[i].urb;
>  					if (async)
>  						usb_unlink_urb(u);
> @@ -1137,12 +1141,12 @@ static int init_substream_urbs(struct sn
>  		if (subs->fmt_type == USB_FORMAT_TYPE_II)
>  			u->packets++; /* for transfer delimiter */
>  		u->urb = usb_alloc_urb(u->packets, GFP_KERNEL);
> -		if (! u->urb)
> +		if (!u->urb)
>  			goto out_of_memory;
>  		u->urb->transfer_buffer =
>  			usb_buffer_alloc(subs->dev, u->buffer_size, GFP_KERNEL,
>  					 &u->urb->transfer_dma);
> -		if (! u->urb->transfer_buffer)
> +		if (!u->urb->transfer_buffer)
>  			goto out_of_memory;
>  		u->urb->pipe = subs->datapipe;
>  		u->urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
> @@ -1155,7 +1159,7 @@ static int init_substream_urbs(struct sn
>  		/* allocate and initialize sync urbs */
>  		subs->syncbuf = usb_buffer_alloc(subs->dev, SYNC_URBS * 4,
>  						 GFP_KERNEL, &subs->sync_dma);
> -		if (! subs->syncbuf)
> +		if (!subs->syncbuf)
>  			goto out_of_memory;
>  		for (i = 0; i < SYNC_URBS; i++) {
>  			struct snd_urb_ctx *u = &subs->syncurb[i];
> @@ -1163,7 +1167,7 @@ static int init_substream_urbs(struct sn
>  			u->subs = subs;
>  			u->packets = 1;
>  			u->urb = usb_alloc_urb(1, GFP_KERNEL);
> -			if (! u->urb)
> +			if (!u->urb)
>  				goto out_of_memory;
>  			u->urb->transfer_buffer = subs->syncbuf + i * 4;
>  			u->urb->transfer_dma = subs->sync_dma + i * 4;
> @@ -1463,7 +1486,7 @@ static int snd_usb_hw_params(struct snd_
>  	rate = params_rate(hw_params);
>  	channels = params_channels(hw_params);
>  	fmt = find_format(subs, format, rate, channels);
> -	if (! fmt) {
> +	if (!fmt) {
>  		snd_printd(KERN_DEBUG "cannot set format: format = 0x%x, rate = %d, channels = %d\n",
>  			   format, rate, channels);
>  		return -EINVAL;
> @@ -1584,7 +1607,7 @@ static int hw_check_valid_format(struct 
>  	struct snd_mask *fmts = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
>  
>  	/* check the format */
> -	if (! snd_mask_test(fmts, fp->format)) {
> +	if (!snd_mask_test(fmts, fp->format)) {
>  		hwc_debug("   > check: no supported format %d\n", fp->format);
>  		return 0;
>  	}
> @@ -1620,7 +1643,7 @@ static int hw_rule_rate(struct snd_pcm_h
>  	list_for_each(p, &subs->fmt_list) {
>  		struct audioformat *fp;
>  		fp = list_entry(p, struct audioformat, list);
> -		if (! hw_check_valid_format(params, fp))
> +		if (!hw_check_valid_format(params, fp))
>  			continue;
>  		if (changed++) {
>  			if (rmin > fp->rate_min)
> @@ -1633,7 +1656,7 @@ static int hw_rule_rate(struct snd_pcm_h
>  		}
>  	}
>  
> -	if (! changed) {
> +	if (!changed) {
>  		hwc_debug("  --> get empty\n");
>  		it->empty = 1;
>  		return -EINVAL;
> @@ -1674,7 +1697,7 @@ static int hw_rule_channels(struct snd_p
>  	list_for_each(p, &subs->fmt_list) {
>  		struct audioformat *fp;
>  		fp = list_entry(p, struct audioformat, list);
> -		if (! hw_check_valid_format(params, fp))
> +		if (!hw_check_valid_format(params, fp))
>  			continue;
>  		if (changed++) {
>  			if (rmin > fp->channels)
> @@ -1687,7 +1710,7 @@ static int hw_rule_channels(struct snd_p
>  		}
>  	}
>  
> -	if (! changed) {
> +	if (!changed) {
>  		hwc_debug("  --> get empty\n");
>  		it->empty = 1;
>  		return -EINVAL;
> @@ -1727,7 +1750,7 @@ static int hw_rule_format(struct snd_pcm
>  	list_for_each(p, &subs->fmt_list) {
>  		struct audioformat *fp;
>  		fp = list_entry(p, struct audioformat, list);
> -		if (! hw_check_valid_format(params, fp))
> +		if (!hw_check_valid_format(params, fp))
>  			continue;
>  		fbits |= (1ULL << fp->format);
>  	}
> @@ -1736,7 +1759,7 @@ static int hw_rule_format(struct snd_pcm
>  	oldbits[1] = fmt->bits[1];
>  	fmt->bits[0] &= (u32)fbits;
>  	fmt->bits[1] &= (u32)(fbits >> 32);
> -	if (! fmt->bits[0] && ! fmt->bits[1]) {
> +	if (!fmt->bits[0] && !fmt->bits[1]) {
>  		hwc_debug("  --> get empty\n");
>  		return -EINVAL;
>  	}
> @@ -2222,7 +2245,7 @@ static void proc_pcm_format_add(struct s
>  	struct snd_card *card = stream->chip->card;
>  
>  	sprintf(name, "stream%d", stream->pcm_index);
> -	if (! snd_card_proc_new(card, name, &entry))
> +	if (!snd_card_proc_new(card, name, &entry))
>  		snd_info_set_text_ops(entry, stream, proc_pcm_format_read);
>  }
>  
> @@ -2278,7 +2301,7 @@ static void free_substream(struct snd_us
>  {
>  	struct list_head *p, *n;
>  
> -	if (! subs->num_formats)
> +	if (!subs->num_formats)
>  		return; /* not initialized */
>  	list_for_each_safe(p, n, &subs->fmt_list) {
>  		struct audioformat *fp = list_entry(p, struct audioformat, list);
> @@ -2328,7 +2351,7 @@ static int add_audio_endpoint(struct snd
>  		if (as->fmt_type != fp->fmt_type)
>  			continue;
>  		subs = &as->substream[stream];
> -		if (! subs->endpoint)
> +		if (!subs->endpoint)
>  			continue;
>  		if (subs->endpoint == fp->endpoint) {
>  			list_add_tail(&fp->list, &subs->fmt_list);
> @@ -2354,7 +2377,7 @@ static int add_audio_endpoint(struct snd
>  
>  	/* create a new pcm */
>  	as = kzalloc(sizeof(*as), GFP_KERNEL);
> -	if (! as)
> +	if (!as)
>  		return -ENOMEM;
>  	as->pcm_index = chip->pcm_devs;
>  	as->chip = chip;
> @@ -3375,14 +3398,14 @@ static int snd_usb_create_quirk(struct s
>  static void proc_audio_usbbus_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
>  {
>  	struct snd_usb_audio *chip = entry->private_data;
> -	if (! chip->shutdown)
> +	if (!chip->shutdown)
>  		snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum);
>  }
>  
>  static void proc_audio_usbid_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
>  {
>  	struct snd_usb_audio *chip = entry->private_data;
> -	if (! chip->shutdown)
> +	if (!chip->shutdown)
>  		snd_iprintf(buffer, "%04x:%04x\n", 
>  			    USB_ID_VENDOR(chip->usb_id),
>  			    USB_ID_PRODUCT(chip->usb_id));
> @@ -3391,9 +3414,9 @@ static void proc_audio_usbid_read(struct
>  static void snd_usb_audio_create_proc(struct snd_usb_audio *chip)
>  {
>  	struct snd_info_entry *entry;
> -	if (! snd_card_proc_new(chip->card, "usbbus", &entry))
> +	if (!snd_card_proc_new(chip->card, "usbbus", &entry))
>  		snd_info_set_text_ops(entry, chip, proc_audio_usbbus_read);
> -	if (! snd_card_proc_new(chip->card, "usbid", &entry))
> +	if (!snd_card_proc_new(chip->card, "usbid", &entry))
>  		snd_info_set_text_ops(entry, chip, proc_audio_usbid_read);
>  }
>  
> @@ -3600,8 +3623,8 @@ static void *snd_usb_audio_probe(struct 
>  				snd_card_set_dev(chip->card, &intf->dev);
>  				break;
>  			}
> -		if (! chip) {
> -			snd_printk(KERN_ERR "no available usb audio device\n");
> +		if (!chip) {
> +			printk(KERN_ERR "no available usb audio device\n");
>  			goto __error;
>  		}
>  	}
> 
> -- 
> (english) http://www.livejournal.com/~pavelmachek
> (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
> 
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