linux-dev/sound/synth, branch master

ALSA: Use del_timer_sync() before freeing timer

2022-10-27T06:42:08Z

The current code for freeing the emux timer is extremely dangerous: CPU0 CPU1 ---- ---- snd_emux_timer_callback() snd_emux_free() spin_lock(&emu->voice_lock) del_timer(&emu->tlist); <-- returns immediately spin_unlock(&emu->voice_lock); [..] kfree(emu); spin_lock(&emu->voice_lock); [BOOM!] Instead just use del_timer_sync() which will wait for the timer to finish before continuing. No need to check if the timer is active or not when doing so. This doesn't fix the race of a possible re-arming of the timer, but at least it won't use the data that has just been freed. [ Fixed unused variable warning by tiwai ] Cc: stable@vger.kernel.org Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Steven Rostedt (Google) Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20221026231236.6834b551@gandalf.local.home Signed-off-by: Takashi Iwai

ALSA: synth: missing check for possible NULL after the call to kstrdup

2021-11-09T06:18:50Z

If kcalloc() return NULL due to memory starvation, it is possible for kstrdup() to return NULL in similar case. So add null check after the call to kstrdup() is made. [ minor coding-style fix by tiwai ] Signed-off-by: Austin Kim Cc: Link: https://lore.kernel.org/r/20211109003742.GA5423@raspberrypi Signed-off-by: Takashi Iwai

ALSA: emux: fix spelling mistakes

2021-07-05T17:34:22Z

Fix some spelling mistakes as follows: sensitivies ==> sensitivities pararameters ==> parameters approxmimation ==> approximation silet ==> silent Signed-off-by: gushengxian Link: https://lore.kernel.org/r/20210705125001.665734-1-gushengxian507419@gmail.com Signed-off-by: Takashi Iwai

ALSA: synth: Fix assignment in if condition

2021-06-09T15:30:35Z

EMUx synth driver code contains lots of assignments in if condition, which is a bad coding style that may confuse readers and occasionally lead to bugs. This patch is merely for coding-style fixes, no functional changes. Link: https://lore.kernel.org/r/20210608140540.17885-64-tiwai@suse.de Signed-off-by: Takashi Iwai

ALSA: emux: More constifications

2020-01-05T15:14:46Z

Apply const prefix to each possible place: the MIDI data definitions, the static tables for volume parameters, etc. Just for minor optimization and no functional changes. Link: https://lore.kernel.org/r/20200105144823.29547-22-tiwai@suse.de Signed-off-by: Takashi Iwai

ALSA: seq: oss: Constify snd_seq_oss_callback definitions

2020-01-03T08:24:41Z

The snd_seq_oss_callback items are just copied to another struct as-is, hence they can be declared as const. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-53-tiwai@suse.de Signed-off-by: Takashi Iwai

ALSA: seq: Constify struct snd_midi_op

2020-01-03T08:24:19Z

Change the argument of snd_midi_process_event() to receive a const snd_midi_op pointer and its callers respectively. This allows further optimizations. There should be no functional changes by this patch. Link: https://lore.kernel.org/r/20200103081714.9560-30-tiwai@suse.de Signed-off-by: Takashi Iwai

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156

2019-05-30T18:26:35Z

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Richard Fontana Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46Z

Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman

ALSA: synth: emux: soundfont.c: divide by zero in calc_gus_envelope_time()

2019-05-06T13:08:08Z

This function is called from load_guspatch() and the rate is specified by the user. If they accidentally selected zero then it would crash the kernel. I've just changed the zero to a one. Signed-off-by: Dan Carpenter Signed-off-by: Takashi Iwai