This is a note to let you know that I've just added the patch titled
ACPI: bus: Indicate support for IRQ ResourceSource 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-irq-resourcesource-thr.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 2d578f620a8d82378ec6344fc49ad1bf573020ae
Author: Armin Wolf <W_Armin@xxxxxx>
Date: Sat Mar 9 21:13:10 2024 +0100
ACPI: bus: Indicate support for IRQ ResourceSource thru _OSC
[ Upstream commit 403ad17c06509794fdf6e4d4b3070bd5b56e2a8e ]
The ACPI IRQ mapping code supports parsing of ResourceSource,
but this is not reported thru _OSC.
Fix this by setting bit 13 ("Interrupt ResourceSource support")
when evaluating _OSC.
Fixes: d44fa3d46079 ("ACPI: Add support for ResourceSource/IRQ domain mapping")
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 9486c1be7258e..3f84d8ed9d299 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -323,6 +323,7 @@ static void acpi_bus_osc_negotiate_platform_control(void)
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;
+ capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_IRQ_RESOURCE_SOURCE_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 01ff2dd313680..de1263b1da3bc 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -577,6 +577,7 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);
#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_IRQ_RESOURCE_SOURCE_SUPPORT 0x00002000
#define OSC_SB_CPC_FLEXIBLE_ADR_SPACE 0x00004000
#define OSC_SB_GENERIC_INITIATOR_SUPPORT 0x00020000
#define OSC_SB_NATIVE_USB4_SUPPORT 0x00040000
