[2/7] platform/x86: fujitsu-laptop: remove redundant safety checks

Commit Message

Michał Kępień June 16, 2017, 4:40 a.m. UTC

Do not check whether the pointer passed to ACPI add callbacks is NULL as
it is earlier dereferenced anyway in the bus-level probe callback,
acpi_device_probe().

Do not check the value of acpi_disabled in fujitsu_init(), because it is
already done by acpi_bus_register_driver(), which is the first function
called by fujitsu_init().

Signed-off-by: Michał Kępień <[e-mail]>
---
 drivers/platform/x86/fujitsu-laptop.c | 9 ---------
 1 file changed, 9 deletions(-)

Patch

diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c
index 54cb7ae541d4..c64d5305ff37 100644
--- a/drivers/platform/x86/fujitsu-laptop.c
+++ b/drivers/platform/x86/fujitsu-laptop.c
@@ -406,9 +406,6 @@  static int acpi_fujitsu_bl_add(struct acpi_device *device)
 	if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
 		return -ENODEV;
 
-	if (!device)
-		return -EINVAL;
-
 	priv = devm_kzalloc(&device->dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
@@ -796,9 +793,6 @@  static int acpi_fujitsu_laptop_add(struct acpi_device *device)
 	int error;
 	int i;
 
-	if (!device)
-		return -EINVAL;
-
 	priv = devm_kzalloc(&device->dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
@@ -993,9 +987,6 @@  static int __init fujitsu_init(void)
 {
 	int ret;
 
-	if (acpi_disabled)
-		return -ENODEV;
-
 	ret = acpi_bus_register_driver(&acpi_fujitsu_bl_driver);
 	if (ret)
 		return ret;