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ACPI: video: Reduce the number of auxiliary device dereferences

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Store the &aux_dev->dev pointer in a separate local variable in
acpi_video_bus_probe() to avoid dereferencing aux_dev many times.

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/2707186.Lt9SDvczpP@rafael.j.wysocki
This commit is contained in:
Rafael J. Wysocki 2026-05-21 16:08:16 +02:00
parent 8813d20d32
commit 0849acee2f
1 changed files with 4 additions and 3 deletions
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7
drivers/acpi/acpi_video.c
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@ -1978,7 +1978,8 @@ static bool acpi_video_bus_dev_is_duplicate(struct device *dev)
static int acpi_video_bus_probe(struct auxiliary_device *aux_dev,
const struct auxiliary_device_id *id_unused)
{
struct acpi_device *device = ACPI_COMPANION(&aux_dev->dev);
struct device *dev = &aux_dev->dev;
struct acpi_device *device = ACPI_COMPANION(dev);
static DEFINE_MUTEX(probe_lock);
struct acpi_video_bus *video;
static int instance;
@ -1988,7 +1989,7 @@ static int acpi_video_bus_probe(struct auxiliary_device *aux_dev,
/* Probe one video bus device at a time in case there are duplicates. */
guard(mutex)(&probe_lock);
if (!allow_duplicates && acpi_video_bus_dev_is_duplicate(&aux_dev->dev)) {
if (!allow_duplicates && acpi_video_bus_dev_is_duplicate(dev)) {
pr_info(FW_BUG
"Duplicate ACPI video bus devices for the"
" same VGA controller, please try module "
@ -2059,7 +2060,7 @@ static int acpi_video_bus_probe(struct auxiliary_device *aux_dev,
!auto_detect)
acpi_video_bus_register_backlight(video);
error = acpi_video_bus_add_notify_handler(video, &aux_dev->dev);
error = acpi_video_bus_add_notify_handler(video, dev);
if (error)
goto err_del;