ALSA: bebob: expand sleep just after breaking connections for protocol version 1

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As long as I investigated, some devices with BeBoB protocol version 1
can be freezed during several hundreds milliseconds after breaking
connections. When accessing during the freezed time, any transaction
is corrupted. In the worst case, the device is going to reboot.

I can see this issue in:
 * Roland FA-66
 * M-Audio FireWire Solo

This commit expands sleep just after breaking connections to avoid
the freezed time as much as possible. I note that the freeze/reboot
behaviour is similar to below models:
 * Focusrite Saffire Pro 10 I/O
 * Focusrite Saffire Pro 26 I/O

The above models certainly reboot after breaking connections.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20191101131323.17300-2-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>

...

This commit is contained in:

Takashi Sakamoto 2019-11-01 22:13:21 +09:00 • committed by Takashi Iwai

parent 0929249e3b

commit d3eabe939a

1 changed files with 6 additions and 5 deletions

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sound/firewire/bebob/bebob_stream.c

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