[PATCH] x86: check function status in EDD boot code
From: Jan Beulich
Date: Fri Jul 18 2008 - 08:35:28 EST
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@xxxxxxxxxx>
---
arch/x86/boot/edd.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
--- linux-2.6.26/arch/x86/boot/edd.c 2008-07-13 23:51:29.000000000 +0200
+++ 2.6.26-x86-edd/arch/x86/boot/edd.c 2008-07-15 19:20:52.000000000 +0200
@@ -167,9 +167,8 @@ void query_edd(void)
* 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++;
--
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