Control messages directed to an interface must have the interface number set in the lower 8 bits of wIndex. This wasn't done correctly for some clock and mixer messages.
Signed-off-by: Daniel Mack daniel@caiaq.de Reported-by: Alex Lee alexlee188@gmail.com --- sound/usb/clock.c | 12 ++++++++---- sound/usb/format.c | 6 ++++-- sound/usb/helper.h | 4 ++++ 3 files changed, 16 insertions(+), 6 deletions(-)
diff --git a/sound/usb/clock.c b/sound/usb/clock.c index b7aadd6..b585511 100644 --- a/sound/usb/clock.c +++ b/sound/usb/clock.c @@ -103,7 +103,8 @@ static int uac_clock_selector_get_val(struct snd_usb_audio *chip, int selector_i ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), UAC2_CS_CUR, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, - UAC2_CX_CLOCK_SELECTOR << 8, selector_id << 8, + UAC2_CX_CLOCK_SELECTOR << 8, + snd_usb_ctrl_intf(chip) | (selector_id << 8), &buf, sizeof(buf), 1000);
if (ret < 0) @@ -120,7 +121,8 @@ static bool uac_clock_source_is_valid(struct snd_usb_audio *chip, int source_id)
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_CLOCK_VALID << 8, source_id << 8, + UAC2_CS_CONTROL_CLOCK_VALID << 8, + snd_usb_ctrl_intf(chip) | (source_id << 8), &data, sizeof(data), 1000);
if (err < 0) { @@ -269,7 +271,8 @@ static int set_sample_rate_v2(struct snd_usb_audio *chip, int iface, data[3] = rate >> 24; 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, clock << 8, + UAC2_CS_CONTROL_SAM_FREQ << 8, + snd_usb_ctrl_intf(chip) | (clock << 8), data, sizeof(data), 1000)) < 0) { snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d (v2)\n", dev->devnum, iface, fmt->altsetting, rate); @@ -278,7 +281,8 @@ static int set_sample_rate_v2(struct snd_usb_audio *chip, int iface,
if ((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, clock << 8, + UAC2_CS_CONTROL_SAM_FREQ << 8, + snd_usb_ctrl_intf(chip) | (clock << 8), data, sizeof(data), 1000)) < 0) { snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq (v2)\n", dev->devnum, iface, fmt->altsetting); diff --git a/sound/usb/format.c b/sound/usb/format.c index df5b29f..8eccf17 100644 --- a/sound/usb/format.c +++ b/sound/usb/format.c @@ -227,7 +227,8 @@ static int parse_audio_format_rates_v2(struct snd_usb_audio *chip, /* get the number of sample rates first by only fetching 2 bytes */ ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE, USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, - UAC2_CS_CONTROL_SAM_FREQ << 8, clock << 8, + UAC2_CS_CONTROL_SAM_FREQ << 8, + snd_usb_ctrl_intf(chip) | (clock << 8), tmp, sizeof(tmp), 1000);
if (ret < 0) { @@ -247,7 +248,8 @@ static int parse_audio_format_rates_v2(struct snd_usb_audio *chip, /* now get the full information */ ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE, USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, - UAC2_CS_CONTROL_SAM_FREQ << 8, clock << 8, + UAC2_CS_CONTROL_SAM_FREQ << 8, + snd_usb_ctrl_intf(chip) | (clock << 8), data, data_size, 1000);
if (ret < 0) { diff --git a/sound/usb/helper.h b/sound/usb/helper.h index a6b0e51..09bd943 100644 --- a/sound/usb/helper.h +++ b/sound/usb/helper.h @@ -28,5 +28,9 @@ unsigned char snd_usb_parse_datainterval(struct snd_usb_audio *chip, #define snd_usb_get_speed(dev) ((dev)->speed) #endif
+static inline int snd_usb_ctrl_intf(struct snd_usb_audio *chip) +{ + return get_iface_desc(chip->ctrl_intf)->bInterfaceNumber; +}
#endif /* __USBAUDIO_HELPER_H */