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sony-laptop: potential null dereference 

In the original code, if "device_enum" was NULL then it would
dereference it when it printed the error message.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
This commit is contained in:
Dan Carpenter 2011-02-27 17:13:25 +03:00 committed by Matthew Garrett
parent 31f007598c
commit 200140bdb5
1 changed files with 5 additions and 1 deletions
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6
drivers/platform/x86/sony-laptop.c
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@ -1311,7 +1311,11 @@ static void sony_nc_rfkill_setup(struct acpi_device *device)
}
device_enum = (union acpi_object *) buffer.pointer;
if (!device_enum || device_enum->type != ACPI_TYPE_BUFFER) {
if (!device_enum) {
pr_err(DRV_PFX "No SN06 return object.");
goto out_no_enum;
}
if (device_enum->type != ACPI_TYPE_BUFFER) {
pr_err(DRV_PFX "Invalid SN06 return object 0x%.2x\n",
device_enum->type);
goto out_no_enum;