From 200140bdb52b259380e9082e2a4f25a4ddbb5d68 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Sun, 27 Feb 2011 17:13:25 +0300 Subject: [PATCH] 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 Signed-off-by: Matthew Garrett --- drivers/platform/x86/sony-laptop.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c index bd1b9adfbaf9..4ab898a39fea 100644 --- a/drivers/platform/x86/sony-laptop.c +++ b/drivers/platform/x86/sony-laptop.c @@ -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; -- 2.20.1