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ALSA: usb-audio: use endianness macros 

Replace the endianness conversions with the kernel-wide swabbing macros
in get/set_sample_rate_v2.

Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Eldad Zack 2013-04-03 23:18:53 +02:00 committed by Takashi Iwai
parent 98ae472b57
commit f6a8bc70f8
1 changed files with 6 additions and 9 deletions
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15
sound/usb/clock.c
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@ -251,21 +251,21 @@ static int get_sample_rate_v2(struct snd_usb_audio *chip, int iface,
int altsetting, int clock)
{
struct usb_device *dev = chip->dev;
unsigned char data[4];
__le32 data;
int err;
err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_CUR,
USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
UAC2_CS_CONTROL_SAM_FREQ << 8,
snd_usb_ctrl_intf(chip) | (clock << 8),
data, sizeof(data));
&data, sizeof(data));
if (err < 0) {
snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq (v2)\n",
dev->devnum, iface, altsetting);
return 0;
}
return data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
return le32_to_cpu(data);
}
static int set_sample_rate_v2(struct snd_usb_audio *chip, int iface,
@ -273,7 +273,7 @@ static int set_sample_rate_v2(struct snd_usb_audio *chip, int iface,
struct audioformat *fmt, int rate)
{
struct usb_device *dev = chip->dev;
unsigned char data[4];
__le32 data;
int err, cur_rate, prev_rate;
int clock = snd_usb_clock_find_source(chip, fmt->clock);
@ -289,15 +289,12 @@ static int set_sample_rate_v2(struct snd_usb_audio *chip, int iface,
prev_rate = get_sample_rate_v2(chip, iface, fmt->altsetting, clock);
data[0] = rate;
data[1] = rate >> 8;
data[2] = rate >> 16;
data[3] = rate >> 24;
data = cpu_to_le32(rate);
if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC2_CS_CUR,
USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
UAC2_CS_CONTROL_SAM_FREQ << 8,
snd_usb_ctrl_intf(chip) | (clock << 8),
data, sizeof(data))) < 0) {
&data, sizeof(data))) < 0) {
snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d (v2)\n",
dev->devnum, iface, fmt->altsetting, rate);
return err;