From 0978824a64f160f1d2e8dc821a522ad91e7b4215 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 12 May 2026 16:15:31 +0200 Subject: [PATCH] platform/x86: toshiba_acpi: Check ACPI_COMPANION() against NULL MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 platform/x86 toshiba_acpi driver. Fixes: 246d6cefe525 ("platform/x86: toshiba_acpi: Convert ACPI driver to a platform one") Signed-off-by: Rafael J. Wysocki Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/1973170.CQOukoFCf9@rafael.j.wysocki Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen --- drivers/platform/x86/toshiba_acpi.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c index 35d899c01740..7cecb3a70b9c 100644 --- a/drivers/platform/x86/toshiba_acpi.c +++ b/drivers/platform/x86/toshiba_acpi.c @@ -3374,7 +3374,7 @@ static const struct dmi_system_id toshiba_dmi_quirks[] __initconst = { static int toshiba_acpi_probe(struct platform_device *pdev) { - struct acpi_device *acpi_dev = ACPI_COMPANION(&pdev->dev); + struct acpi_device *acpi_dev; struct toshiba_acpi_dev *dev; const char *hci_method; u32 dummy; @@ -3383,6 +3383,10 @@ static int toshiba_acpi_probe(struct platform_device *pdev) if (toshiba_acpi) return -EBUSY; + acpi_dev = ACPI_COMPANION(&pdev->dev); + if (!acpi_dev) + return -ENODEV; + pr_info("Toshiba Laptop ACPI Extras version %s\n", TOSHIBA_ACPI_VERSION);