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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2023-09-27 23:17:25 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2023-09-29 13:40:35 +0300 |
| commit | 2e57d10a6591560724b80a628235559571f4cb8d (patch) | |
| tree | 9ea4fa8e8e9ff7a4c1a075511cddd767497ac3b0 /include/acpi | |
| parent | 3e7d6f396d74a3e40c390bb53947938957426097 (diff) | |
| download | linux-2e57d10a6591560724b80a628235559571f4cb8d.tar.xz | |
ACPI: utils: Dynamically determine acpi_handle_list size
Address a long-standing "TBD" comment in the ACPI headers regarding the
number of handles in struct acpi_handle_list.
The number 10, which along with the comment dates back to 2.4.23, seems
like it may have been arbitrarily chosen and isn't sufficient in all
cases [1].
Finally change the code to dynamically determine the size of the handles
table in struct acpi_handle_list and allocate it accordingly.
Update the users of to struct acpi_handle_list to take the additional
dynamic allocation into account.
Link: https://lore.kernel.org/linux-acpi/20230809094451.15473-1-ivan.hu@canonical.com # [1]
Co-developed-by: Vicki Pfau <vi@endrift.com>
Signed-off-by: Vicki Pfau <vi@endrift.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/acpi')
| -rw-r--r-- | include/acpi/acpi_bus.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 254685085c82..9920611a6faa 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -12,11 +12,9 @@ #include <linux/device.h> #include <linux/property.h> -/* TBD: Make dynamic */ -#define ACPI_MAX_HANDLES 10 struct acpi_handle_list { u32 count; - acpi_handle handles[ACPI_MAX_HANDLES]; + acpi_handle* handles; }; /* acpi_utils.h */ @@ -32,6 +30,11 @@ acpi_evaluate_reference(acpi_handle handle, acpi_string pathname, struct acpi_object_list *arguments, struct acpi_handle_list *list); +bool acpi_handle_list_equal(struct acpi_handle_list *list1, + struct acpi_handle_list *list2); +void acpi_handle_list_replace(struct acpi_handle_list *dst, + struct acpi_handle_list *src); +void acpi_handle_list_free(struct acpi_handle_list *list); acpi_status acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code, struct acpi_buffer *status_buf); |