This is a note to let you know that I've just added the patch titled
Revert "ALSA: sb8: add a check for request_region"
to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
revert-alsa-sb8-add-a-check-for-request_region.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 94f88309f201821073f57ae6005caefa61bf7b7e Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Date: Mon, 3 May 2021 13:57:01 +0200
Subject: Revert "ALSA: sb8: add a check for request_region"
From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
commit 94f88309f201821073f57ae6005caefa61bf7b7e upstream.
This reverts commit dcd0feac9bab901d5739de51b3f69840851f8919.
Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.
Upon review, this commit was found to be incorrect for the reasons
below, so it must be reverted. It will be fixed up "correctly" in a
later kernel change.
The original commit message for this change was incorrect as the code
path can never result in a NULL dereference, alluding to the fact that
whatever tool was used to "find this" is broken. It's just an optional
resource reservation, so removing this check is fine.
Cc: Kangjie Lu <kjlu@xxxxxxx>
Acked-by: Takashi Iwai <tiwai@xxxxxxx>
Fixes: dcd0feac9bab ("ALSA: sb8: add a check for request_region")
Cc: stable <stable@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210503115736.2104747-35-gregkh@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/isa/sb/sb8.c | 4 ----
1 file changed, 4 deletions(-)
--- a/sound/isa/sb/sb8.c
+++ b/sound/isa/sb/sb8.c
@@ -111,10 +111,6 @@ static int snd_sb8_probe(struct device *
/* block the 0x388 port to avoid PnP conflicts */
acard->fm_res = request_region(0x388, 4, "SoundBlaster FM");
- if (!acard->fm_res) {
- err = -EBUSY;
- goto _err;
- }
if (port[dev] != SNDRV_AUTO_PORT) {
if ((err = snd_sbdsp_create(card, port[dev], irq[dev],
Patches currently in stable-queue which might be from gregkh@xxxxxxxxxxxxxxxxxxx are
queue-4.14/cifs-fix-memory-leak-in-smb2_copychunk_range.patch
queue-4.14/alsa-hda-realtek-reset-eapd-coeff-to-default-value-for-alc287.patch
queue-4.14/alsa-bebob-oxfw-fix-kconfig-entry-for-mackie-d.2-pro.patch
queue-4.14/alsa-line6-fix-racy-initialization-of-line6-midi.patch
queue-4.14/alsa-usb-audio-validate-ms-endpoint-descriptors.patch
queue-4.14/revert-alsa-sb8-add-a-check-for-request_region.patch
