This is a note to let you know that I've just added the patch titled ALSA: usb-audio: Increase max buffer size to the 5.17-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: alsa-usb-audio-increase-max-buffer-size.patch and it can be found in the queue-5.17 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 800b31794fd0bf1f35fdb8058e602f5b34ff39f3 Author: Takashi Iwai <tiwai@xxxxxxx> Date: Thu Apr 7 23:27:40 2022 +0200 ALSA: usb-audio: Increase max buffer size [ Upstream commit fee2ec8cceb33b8886bc5894fb07e0b2e34148af ] The current limit of max buffer size 1MB seems too small for modern devices with lots of channels and high sample rates. Let's make bigger, 4MB. Reviewed-by: Jaroslav Kysela <perex@xxxxxxxx> Link: https://lore.kernel.org/r/20220407212740.17920-1-tiwai@xxxxxxx Signed-off-by: Takashi Iwai <tiwai@xxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index 6a460225f2e3..37ee6df8b15a 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -659,7 +659,7 @@ static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) #define hwc_debug(fmt, args...) do { } while(0) #endif -#define MAX_BUFFER_BYTES (1024 * 1024) +#define MAX_BUFFER_BYTES (4 * 1024 * 1024) #define MAX_PERIOD_BYTES (512 * 1024) static const struct snd_pcm_hardware snd_usb_hardware =