Hi, Sasha,

On Wed, Oct 15, 2025 at 7:42 PM Sasha Levin sashal@kernel.org wrote:

This is a note to let you know that I've just added the patch titled

LoongArch: Init acpi_gbl_use_global_lock to false

to the 6.12-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: loongarch-init-acpi_gbl_use_global_lock-to-false.patch and it can be found in the queue-6.12 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

Please also backport feb8ae81b2378b75a99c81d3156 ("ACPICA: Allow to skip Global Lock initialization") as a dependency for all stable branches.

Huacai

commit abbcba805d220623909699cbeb81b739d3dd5a06 Author: Huacai Chen chenhuacai@kernel.org Date: Thu Oct 2 22:38:57 2025 +0800

LoongArch: Init acpi_gbl_use_global_lock to false

[ Upstream commit 98662be7ef20d2b88b598f72e7ce9b6ac26a40f9 ]

Init acpi_gbl_use_global_lock to false, in order to void error messages
during boot phase:

 ACPI Error: Could not enable GlobalLock event (20240827/evxfevnt-182)
 ACPI Error: No response from Global Lock hardware, disabling lock (20240827/evglock-59)

Fixes: 628c3bb40e9a8cefc0a6 ("LoongArch: Add boot and setup routines")
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/arch/loongarch/kernel/setup.c b/arch/loongarch/kernel/setup.c index 1fa6a604734ef..2ceb198ae8c80 100644 --- a/arch/loongarch/kernel/setup.c +++ b/arch/loongarch/kernel/setup.c @@ -354,6 +354,7 @@ void __init platform_init(void)

#ifdef CONFIG_ACPI acpi_table_upgrade();

•   acpi_gbl_use_global_lock = false;
    acpi_gbl_use_default_register_widths = false;
    acpi_boot_table_init();
  

#endif