diff options
| author | Pengjie Zhang <zhangpengjie2@huawei.com> | 2025-12-10 21:26:34 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2025-12-15 13:00:33 +0100 |
| commit | f103fa127c93016bcd89b05d8e11dc1a84f6990d (patch) | |
| tree | e03de85d1eddf84d192af3951ff26c0f965cdab4 /drivers/acpi | |
| parent | 6ea3a44cef28add2d93b1ef119d84886cb1e3c9b (diff) | |
ACPI: PCC: Fix race condition by removing static qualifier
Local variable 'ret' in acpi_pcc_address_space_setup() is currently
declared as 'static'. This can lead to race conditions in a
multithreaded environment.
Remove the 'static' qualifier to ensure that 'ret' will be allocated
directly on the stack as a local variable.
Fixes: a10b1c99e2dc ("ACPI: PCC: Setup PCC Opregion handler only if platform interrupt is available")
Signed-off-by: Pengjie Zhang <zhangpengjie2@huawei.com>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: lihuisong@huawei.com
Cc: 6.2+ <stable@vger.kernel.org> # 6.2+
[ rjw: Changelog edits ]
Link: https://patch.msgid.link/20251210132634.2050033-1-zhangpengjie2@huawei.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/acpi_pcc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/acpi/acpi_pcc.c b/drivers/acpi/acpi_pcc.c index 97064e943768..e3f302b9dee5 100644 --- a/drivers/acpi/acpi_pcc.c +++ b/drivers/acpi/acpi_pcc.c @@ -52,7 +52,7 @@ acpi_pcc_address_space_setup(acpi_handle region_handle, u32 function, struct pcc_data *data; struct acpi_pcc_info *ctx = handler_context; struct pcc_mbox_chan *pcc_chan; - static acpi_status ret; + acpi_status ret; data = kzalloc(sizeof(*data), GFP_KERNEL); if (!data) |