linux-kernel - [PATCH 1/2] acpi: Fail GED probe when not on hardware-reduced

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Date:   Wed,  9 Oct 2019 15:04:32 +0200
From:   Samuel Ortiz <sameo@...ux.intel.com>
To:     Len Brown <lenb@...nel.org>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>
Cc:     linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
        Samuel Ortiz <sameo@...ux.intel.com>
Subject: [PATCH 1/2] acpi: Fail GED probe when not on hardware-reduced

The Generic Event Device (GED) is a hardware-reduced platform device.
Probing this driver on fixed platforms should fail.

Signed-off-by: Samuel Ortiz <sameo@...ux.intel.com>
---
 drivers/acpi/evged.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/acpi/evged.c b/drivers/acpi/evged.c
index aba0d0027586..55de4b2d2fee 100644
--- a/drivers/acpi/evged.c
+++ b/drivers/acpi/evged.c
@@ -127,6 +127,9 @@ static int ged_probe(struct platform_device *pdev)
 	struct acpi_ged_device *geddev;
 	acpi_status acpi_ret;
 
+	if (!acpi_gbl_reduced_hardware)
+		return -ENODEV;
+
 	geddev = devm_kzalloc(&pdev->dev, sizeof(*geddev), GFP_KERNEL);
 	if (!geddev)
 		return -ENOMEM;
-- 
2.21.0