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platform/x86: intel_sar: Check ACPI_HANDLE() against NULL

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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_HANDLE() check against NULL to the
platform/x86 intel_sar driver.

Fixes: dcfbd31ef4 ("platform/x86: BIOS SAR driver for Intel M.2 Modem")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/14023870.uLZWGnKmhe@rafael.j.wysocki
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Rafael J. Wysocki 2026-05-12 17:15:32 +02:00 committed by Ilpo Järvinen
parent 5c69e090ae
commit 2765f16c12
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1 changed files with 6 additions and 1 deletions
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7
drivers/platform/x86/intel/int1092/intel_sar.c
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@ -245,15 +245,20 @@ static void sar_get_data(int reg, struct wwan_sar_context *context)
static int sar_probe(struct platform_device *device)
{
struct wwan_sar_context *context;
acpi_handle handle;
int reg;
int result;
handle = ACPI_HANDLE(&device->dev);
if (!handle)
return -ENODEV;
context = kzalloc_obj(*context);
if (!context)
return -ENOMEM;
context->sar_device = device;
context->handle = ACPI_HANDLE(&device->dev);
context->handle = handle;
dev_set_drvdata(&device->dev, context);
result = guid_parse(SAR_DSM_UUID, &context->guid);