This is a note to let you know that I've just added the patch titled
ACPI / PNP: add two IDs to list for PNPACPI device enumeration
to the 4.0-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:
acpi-pnp-add-two-ids-to-list-for-pnpacpi-device-enumeration.patch
and it can be found in the queue-4.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 622532bb2fad8fe342fb685727ae0be566f6be5d Mon Sep 17 00:00:00 2001
From: Witold Szczeponik <Witold.Szczeponik@xxxxxxx>
Date: Fri, 1 May 2015 19:05:20 +0200
Subject: ACPI / PNP: add two IDs to list for PNPACPI device enumeration
From: Witold Szczeponik <Witold.Szczeponik@xxxxxxx>
commit 622532bb2fad8fe342fb685727ae0be566f6be5d upstream.
Commit eec15edbb0e1 (ACPI / PNP: use device ID list for PNPACPI device
enumeration) changed the way how ACPI devices are enumerated and when
they are added to the PNP bus.
However, it broke the sound card support on (at least) a vintage
IBM ThinkPad 600E: with said commit applied, two of the necessary
"CSC01xx" devices are not added to the PNP bus and hence can not be
found during the initialization of the "snd-cs4236" module. As a
consequence, loading "snd-cs4236" causes null pointer exceptions.
The attached patch fixes the problem end re-enables sound on the
IBM ThinkPad 600E.
Fixes: eec15edbb0e1 (ACPI / PNP: use device ID list for PNPACPI device enumeration)
Signed-off-by: Witold Szczeponik <Witold.Szczeponik@xxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/acpi/acpi_pnp.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/acpi/acpi_pnp.c
+++ b/drivers/acpi/acpi_pnp.c
@@ -304,6 +304,8 @@ static const struct acpi_device_id acpi_
{"PNPb006"},
/* cs423x-pnpbios */
{"CSC0100"},
+ {"CSC0103"},
+ {"CSC0110"},
{"CSC0000"},
{"GIM0100"}, /* Guillemot Turtlebeach something appears to be cs4232 compatible */
/* es18xx-pnpbios */
Patches currently in stable-queue which might be from Witold.Szczeponik@xxxxxxx are
queue-4.0/acpi-pnp-add-two-ids-to-list-for-pnpacpi-device-enumeration.patch
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