From db9c2a6d3fd62873ea94e09e31230004498ea061 Mon Sep 17 00:00:00 2001
From: "K. Lange" <klange@toaruos.org>
Date: Thu, 2 Sep 2021 21:30:59 +0900
Subject: [PATCH] ata: Don't make device nodes for disks that claim to be empty

---
 modules/ata.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/modules/ata.c b/modules/ata.c
index a156fa9b..417155fb 100644
--- a/modules/ata.c
+++ b/modules/ata.c
@@ -658,13 +658,15 @@ static int ata_device_detect(struct ata_device * dev) {
 	if ((cl == 0x00 && ch == 0x00) ||
 	    (cl == 0x3C && ch == 0xC3)) {
 		/* Parallel ATA device, or emulated SATA */
+		off_t sectors = ata_max_offset(dev);
+		if (sectors == 0) return 0;
 
 		char devname[64];
 		snprintf((char *)&devname, 20, "/dev/hd%c", ata_drive_char);
 		fs_node_t * node = ata_device_create(dev);
 		vfs_mount(devname, node);
 		ata_device_init(dev);
-		node->length  = ata_max_offset(dev);
+		node->length  = sectors;
 
 		ata_drive_char++;
 		return 1;