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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 /drivers/platform/surface | |
| 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 'drivers/platform/surface')
| -rw-r--r-- | drivers/platform/surface/surface_acpi_notify.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/platform/surface/surface_acpi_notify.c b/drivers/platform/surface/surface_acpi_notify.c index 897cdd9c3aae..0412a644fece 100644 --- a/drivers/platform/surface/surface_acpi_notify.c +++ b/drivers/platform/surface/surface_acpi_notify.c @@ -741,6 +741,7 @@ static bool is_san_consumer(struct platform_device *pdev, acpi_handle handle) struct acpi_handle_list dep_devices; acpi_handle supplier = ACPI_HANDLE(&pdev->dev); acpi_status status; + bool ret = false; int i; if (!acpi_has_method(handle, "_DEP")) @@ -753,11 +754,14 @@ static bool is_san_consumer(struct platform_device *pdev, acpi_handle handle) } for (i = 0; i < dep_devices.count; i++) { - if (dep_devices.handles[i] == supplier) - return true; + if (dep_devices.handles[i] == supplier) { + ret = true; + break; + } } - return false; + acpi_handle_list_free(&dep_devices); + return ret; } static acpi_status san_consumer_setup(acpi_handle handle, u32 lvl, |