This is a note to let you know that I've just added the patch titled
ACPI: bus: Indicate support for the Generic Event Device thru _OSC
to the 6.8-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-bus-indicate-support-for-the-generic-event-devi.patch
and it can be found in the queue-6.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit d33b9162618cfa189da51f5f961e2a6e7c919f2c
Author: Armin Wolf <W_Armin@xxxxxx>
Date: Sat Mar 9 21:13:08 2024 +0100
ACPI: bus: Indicate support for the Generic Event Device thru _OSC
[ Upstream commit a8a967a243d71dd635ede076020f665a4df51c63 ]
A device driver for the Generic Event Device (ACPI0013) already
exists for quite some time, but support for it was never reported
thru _OSC.
Fix this by setting bit 11 ("Generic Event Device support") when
evaluating _OSC.
Fixes: 3db80c230da1 ("ACPI: implement Generic Event Device")
Signed-off-by: Armin Wolf <W_Armin@xxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index aee91fa2a4596..9486c1be7258e 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -322,6 +322,7 @@ static void acpi_bus_osc_negotiate_platform_control(void)
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT;
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PCLPI_SUPPORT;
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_OVER_16_PSTATES_SUPPORT;
+ capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_GED_SUPPORT;
if (IS_ENABLED(CONFIG_ACPI_PRMT))
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PRM_SUPPORT;
if (IS_ENABLED(CONFIG_ACPI_FFH))
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 7658d06b5bccf..60517f4650a3b 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -575,6 +575,7 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);
#define OSC_SB_OSLPI_SUPPORT 0x00000100
#define OSC_SB_FAST_THERMAL_SAMPLING_SUPPORT 0x00000200
#define OSC_SB_OVER_16_PSTATES_SUPPORT 0x00000400
+#define OSC_SB_GED_SUPPORT 0x00000800
#define OSC_SB_CPC_DIVERSE_HIGH_SUPPORT 0x00001000
#define OSC_SB_GENERIC_INITIATOR_SUPPORT 0x00002000
#define OSC_SB_CPC_FLEXIBLE_ADR_SPACE 0x00004000
