x86: check function status in EDD boot code
Without checking the return value of get_edd_info() and adding the
entry only in the success case, 6 devices show up under
/sys/firmware/edd/, no matter how many devices are actually present.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
diff --git a/arch/x86/boot/edd.c b/arch/x86/boot/edd.c
index 03399d6..d93cbc6 100644
--- a/arch/x86/boot/edd.c
+++ b/arch/x86/boot/edd.c
@@ -167,9 +167,8 @@
* Scan the BIOS-supported hard disks and query EDD
* information...
*/
- get_edd_info(devno, &ei);
-
- if (boot_params.eddbuf_entries < EDDMAXNR) {
+ if (!get_edd_info(devno, &ei)
+ && boot_params.eddbuf_entries < EDDMAXNR) {
memcpy(edp, &ei, sizeof ei);
edp++;
boot_params.eddbuf_entries++;