[04/26] acerhdf: driver didn't verify the pointers in which it got product information

Commit Message

Andrew Morton July 20, 2010, 10:19 p.m. UTC

None

Patch

diff -puN drivers/platform/x86/acerhdf.c~acerhdf-driver-didnt-verify-the-pointers-in-which-it-got-product-information drivers/platform/x86/acerhdf.c
--- a/drivers/platform/x86/acerhdf.c~acerhdf-driver-didnt-verify-the-pointers-in-which-it-got-product-information
+++ a/drivers/platform/x86/acerhdf.c
@@ -524,6 +524,10 @@  static int acerhdf_check_hardware(void)
 	version = dmi_get_system_info(DMI_BIOS_VERSION);
 	product = dmi_get_system_info(DMI_PRODUCT_NAME);
 
+	if (!vendor || !version || !product) {
+		pr_err("error getting hardware information\n");
+		return -EINVAL;
+	}
 
 	pr_info("Acer Aspire One Fan driver, v.%s\n", DRV_VER);