Patch "Add USB quirk for HVR-950q to avoid intermittent device resets" has been added to the 3.18-stable tree
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This is a note to let you know that I've just added the patch titled
Add USB quirk for HVR-950q to avoid intermittent device resets
to the 3.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
add-usb-quirk-for-hvr-950q-to-avoid-intermittent-device-resets.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.
Quoted 1 line
From
6836796de4019944f4ba4c99a360e8250fd2e735Mon Sep 17 00:00:00 2001
From: Devin Heitmueller <[email protected]>
Date: Tue, 27 Jun 2017 13:08:51 -0400
Subject: Add USB quirk for HVR-950q to avoid intermittent device resets
From: Devin Heitmueller <[email protected]>
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.
--- drivers/usb/core/quirks.c | 4 ++++ 1 file changed, 4 insertions(+)
drivers/usb/core/quirks.c +4 -0
@@ -216,6 +216,10 @@ static const struct usb_device_id usb_qu/* 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 },
Patches currently in stable-queue which might be from [email protected] are
queue-3.18/add-usb-quirk-for-hvr-950q-to-avoid-intermittent-device-resets.patch