[PATCH] drivers: acpi: fan.c move a dereference below the NULL test

[Darren Jenkins]

In acpi_fan_remove() device is being dereferenced before the NULL test.
This reorders the code to ensure it is checked for NULL first.

Coverity CID: 2758

Signed-off-by: Darren Jenkins <darrenrjenkins@xxxxxxxxx>
---
 drivers/acpi/fan.c |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index acf2ab2..dc39640 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -298,9 +298,14 @@ static int acpi_fan_add(struct acpi_device *device)
 
 static int acpi_fan_remove(struct acpi_device *device, int type)
 {
-	struct thermal_cooling_device *cdev = acpi_driver_data(device);
+	struct thermal_cooling_device *cdev;
+
+	if (!device)
+		return -EINVAL;
+
+	cdev = acpi_driver_data(device);
 
-	if (!device || !cdev)
+	if (!cdev)
 		return -EINVAL;
 
 	acpi_fan_remove_fs(device);
-- 
1.6.3.3




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