tree f135537664d6d8e78c5bd9768d6cc2822b97e79c
parent 827faa2e4ef715a165449475d001606044c3eed2
author Takashi Sakamoto <o-takashi@sakamocchi.jp> 1492141381 +0900
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1493825797 -0700

ALSA: firewire-lib: fix inappropriate assignment between signed/unsigned type

commit dfb00a56935186171abb5280b3407c3f910011f1 upstream.

An abstraction of asynchronous transaction for transmission of MIDI
messages was introduced in Linux v4.4. Each driver can utilize this
abstraction to transfer MIDI messages via fixed-length payload of
transaction to a certain unit address. Filling payload of the transaction
is done by callback. In this callback, each driver can return negative
error code, however current implementation assigns the return value to
unsigned variable.

This commit changes type of the variable to fix the bug.

Reported-by: Julia Lawall <Julia.Lawall@lip6.fr>
Fixes: 585d7cba5e1f ("ALSA: firewire-lib: add helper functions for asynchronous transactions to transfer MIDI messages")
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>