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| H A D | seq_clientmgr.c | diff 396964d45ca5dc035f5247f90ec800016744661a Tue Dec 31 08:53:58 CST 2024 Takashi Iwai <tiwai@suse.de> ALSA: seq: Check UMP support for midi_version change
commit 8765429279e7d3d68d39ace5f84af2815174bb1e upstream.
When the kernel is built without UMP support but a user-space app
requires the midi_version > 0, the kernel should return an error.
Otherwise user-space assumes as if it were possible to deal,
eventually hitting serious errors later.
Fixes: 46397622a3fa ("ALSA: seq: Add UMP support")
Cc: <stable@vger.kernel.org>
Link: https://patch.msgid.link/20241231145358.21946-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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