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authorEldad Zack <eldad@fogrefinery.com>2013-04-04 01:18:53 +0400
committerTakashi Iwai <tiwai@suse.de>2013-04-04 10:30:49 +0400
commitf6a8bc70f85fdc49c5a3eca687c6018ffee8f050 (patch)
treeae73558b4fde7bfa7b9cfe02a6c895de1a64cd1d /sound/usb/clock.c
parent98ae472b574647e36b2c8306091dff6de4606222 (diff)
downloadlinux-f6a8bc70f85fdc49c5a3eca687c6018ffee8f050.tar.xz
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>
Diffstat (limited to 'sound/usb/clock.c')
-rw-r--r--sound/usb/clock.c15
1 files changed, 6 insertions, 9 deletions
diff --git a/sound/usb/clock.c b/sound/usb/clock.c
index e3ccf3d81075..013b346f045d 100644
--- a/sound/usb/clock.c
+++ b/sound/usb/clock.c
@@ -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;