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[ Upstream commit aaa55faa2495320e44bc643a917c701f2cc89ee7 ]
update_port_infos() is called when a UMP FB Info update notification
is received, and this function is supposed to update the attributes of
the corresponding sequencer port. However, the function had a few
issues and it brought to the incorrect states. Namely:
- It tried to get a wrong sequencer info for the update without
correcting the port number with the group-offset 1
- The loop exited immediately when a sequencer port isn't present;
this ended up with the truncation if a sequencer port in the middle
goes away
This patch addresses those bugs.
Fixes: 4a16a3af05 ("ALSA: seq: ump: Handle FB info update")
Link: https://patch.msgid.link/20241128170423.23351-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.