From 4630b99d2e93a91b304f498c4d543c002fb78ca5 Mon Sep 17 00:00:00 2001 From: Kurt Borja Date: Fri, 11 Apr 2025 11:36:41 -0300 Subject: [PATCH] platform/x86: dell-pc: Propagate errors when detecting feature support MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The dell-pc module only supports the thermal management Dell SMBIOS feature, therefore it is pointless to have it loaded if this is not available. Signed-off-by: Kurt Borja Link: https://lore.kernel.org/r/20250411-dell-faux-v1-1-ea1f1c929b7e@gmail.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen --- drivers/platform/x86/dell/dell-pc.c | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-) diff --git a/drivers/platform/x86/dell/dell-pc.c b/drivers/platform/x86/dell/dell-pc.c index 483240bb36e77..38f198a733000 100644 --- a/drivers/platform/x86/dell/dell-pc.c +++ b/drivers/platform/x86/dell/dell-pc.c @@ -146,11 +146,6 @@ static int thermal_get_supported_modes(int *supported_bits) dell_fill_request(&buffer, 0x0, 0, 0, 0); ret = dell_send_request(&buffer, CLASS_INFO, SELECT_THERMAL_MANAGEMENT); - /* Thermal function not supported */ - if (ret == -ENXIO) { - *supported_bits = 0; - return 0; - } if (ret) return ret; *supported_bits = FIELD_GET(DELL_THERMAL_SUPPORTED, buffer.output[1]); @@ -255,16 +250,12 @@ static int thermal_init(void) struct device *ppdev; int ret; - /* If thermal commands are not supported, exit without error */ if (!dell_smbios_class_is_supported(CLASS_INFO)) - return 0; + return -ENODEV; - /* If thermal modes are not supported, exit without error */ ret = thermal_get_supported_modes(&supported_modes); if (ret < 0) return ret; - if (!supported_modes) - return 0; platform_device = platform_device_register_simple("dell-pc", PLATFORM_DEVID_NONE, NULL, 0); if (IS_ERR(platform_device)) @@ -297,7 +288,6 @@ static int __init dell_init(void) if (!dmi_check_system(dell_device_table)) return -ENODEV; - /* Do not fail module if thermal modes not supported, just skip */ ret = thermal_init(); if (ret) goto fail_thermal; -- 2.47.2