From: Alan Cox <alan@lxorguk.ukuu.org.uk>
Date: Mon, 27 Jun 2005 22:24:22 +0000 (-0700)
Subject: [PATCH] ide: fix ide-disk inability to handle LBA only devices.
X-Git-Tag: v2.6.13-rc1~46^2~91
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6efd936046b123303ace4330fd2f26195ad7b1c4;p=linux-2.6

[PATCH] ide: fix ide-disk inability to handle LBA only devices.

Years old bug, has to be fixed for it8212 to work

Signed-off-by: Alan Cox <alan@redhat.com>
Acked-by: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index d6f934886b..f9c1acb4ed 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -119,6 +119,10 @@ static int lba_capacity_is_ok (struct hd_driveid *id)
 {
 	unsigned long lba_sects, chs_sects, head, tail;
 
+	/* No non-LBA info .. so valid! */
+	if (id->cyls == 0)
+		return 1;
+
 	/*
 	 * The ATA spec tells large drives to return
 	 * C/H/S = 16383/16/63 independent of their size.