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authorDevin Heitmueller <dheitmueller@kernellabs.com>2017-06-27 13:08:51 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-07-15 11:57:45 +0200
commitab96add78bfe764a4994545993ac1c32978f8dc0 (patch)
treee973d6614a38545fcd72a28e5ee718eb9e2667fd /drivers
parent45c73d0c7a96890e6a4e45576d4c544e15bed6e6 (diff)
Add USB quirk for HVR-950q to avoid intermittent device resets
commit 6836796de4019944f4ba4c99a360e8250fd2e735 upstream. The USB core and sysfs will attempt to enumerate certain parameters which are unsupported by the au0828 - causing inconsistent behavior and sometimes causing the chip to reset. Avoid making these calls. This problem manifested as intermittent cases where the au8522 would be reset on analog video startup, in particular when starting up ALSA audio streaming in parallel - the sysfs entries created by snd-usb-audio on streaming startup would result in unsupported control messages being sent during tuning which would put the chip into an unknown state. Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/usb/core/quirks.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index 96b21b0dac1e..3116edfcdc18 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -223,6 +223,10 @@ static const struct usb_device_id usb_quirk_list[] = {
/* Blackmagic Design UltraStudio SDI */
{ USB_DEVICE(0x1edb, 0xbd4f), .driver_info = USB_QUIRK_NO_LPM },
+ /* Hauppauge HVR-950q */
+ { USB_DEVICE(0x2040, 0x7200), .driver_info =
+ USB_QUIRK_CONFIG_INTF_STRINGS },
+
/* INTEL VALUE SSD */
{ USB_DEVICE(0x8086, 0xf1a5), .driver_info = USB_QUIRK_RESET_RESUME },