At Sun, 16 Feb 2014 17:11:10 +0100, Clemens Ladisch wrote:

When the driver tries to access Function Unit 10, the KEF X300A speakers' firmware apparently locks up, making even PCM streaming impossible. Work around this by ignoring this FU.

Cc: stable@vger.kernel.org Signed-off-by: Clemens Ladisch clemens@ladisch.de

Thanks, applied.

Takashi

---

sound/usb/mixer_maps.c | 9 +++++++++ 1 file changed, 9 insertions(+)

diff --git a/sound/usb/mixer_maps.c b/sound/usb/mixer_maps.c index 32af6b7..d1d72ff 100644 --- a/sound/usb/mixer_maps.c +++ b/sound/usb/mixer_maps.c @@ -328,6 +328,11 @@ static struct usbmix_name_map gamecom780_map[] = { {} };

+static const struct usbmix_name_map kef_x300a_map[] = {

• { 10, NULL }, /* firmware locks up (?) when we try to access this FU */
• { 0 }

+};

/*

• Control map entries

*/ @@ -419,6 +424,10 @@ static struct usbmix_ctl_map usbmix_ctl_maps[] = { .id = USB_ID(0x200c, 0x1018), .map = ebox44_map, },

• {

• .id = USB_ID(0x27ac, 0x1000),
  

• .map = kef_x300a_map,
  

• }, { 0 } /* terminator */

};