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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2026-05-12 18:28:26 +0200 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2026-05-16 19:25:33 +0100 |
| commit | ff29241030eb6f4505d903d87c29f51c1866a95d (patch) | |
| tree | 98f14d3c106144eb12a1a22aed6ec15d903b443e | |
| parent | 70247658d0e783c93b48fcbc3b81d99e992ff478 (diff) | |
| download | linux-next-ff29241030eb6f4505d903d87c29f51c1866a95d.tar.gz linux-next-ff29241030eb6f4505d903d87c29f51c1866a95d.zip | |
iio: light: acpi-als: Check ACPI_COMPANION() against NULL
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
acpi-als IIO driver.
Fixes: d4243cb08a27 ("iio: light: acpi-als: Convert ACPI driver to a platform one")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| -rw-r--r-- | drivers/iio/light/acpi-als.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/iio/light/acpi-als.c b/drivers/iio/light/acpi-als.c index ab229318dce9..1983a7f17aa9 100644 --- a/drivers/iio/light/acpi-als.c +++ b/drivers/iio/light/acpi-als.c @@ -179,11 +179,15 @@ out: static int acpi_als_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct acpi_device *device = ACPI_COMPANION(dev); + struct acpi_device *device; struct iio_dev *indio_dev; struct acpi_als *als; int ret; + device = ACPI_COMPANION(dev); + if (!device) + return -ENODEV; + indio_dev = devm_iio_device_alloc(dev, sizeof(*als)); if (!indio_dev) return -ENOMEM; |