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platform/chrome: chromeos_tbmc: Check ACPI_COMPANION()

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Every platform driver can be forced to match a device that doesn't match
its list of device IDs because of device_match_driver_override(), so
platform drivers that rely on the existence of a device's ACPI companion
object need to verify its presence.

Accordingly, add a requisite ACPI_COMPANION() check against NULL to the
chromeos_tbmc driver.

Fixes: a2676ead25 ("platform/chrome: chromeos_tbmc: Convert to a platform driver")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/1875121.VLH7GnMWUR@rafael.j.wysocki
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
This commit is contained in:
Rafael J. Wysocki
2026-05-12 18:35:54 +02:00
committed by Tzung-Bi Shih
parent 8a4a217f61
commit c15dbae7c8
1 changed files with 5 additions and 1 deletions
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6
drivers/platform/chrome/chromeos_tbmc.c
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@@ -69,9 +69,13 @@ static int chromeos_tbmc_probe(struct platform_device *pdev)
{
struct input_dev *idev;
struct device *dev = &pdev->dev;
struct acpi_device *adev = ACPI_COMPANION(dev);
struct acpi_device *adev;
int ret;
adev = ACPI_COMPANION(dev);
if (!adev)
return -ENODEV;
idev = devm_input_allocate_device(dev);
if (!idev)
return -ENOMEM;