1 files changed, 16 insertions, 11 deletions

diff --git a/hw/ide.c b/hw/ide.c
index 18431e7a33..bc82bb21d1 100644
--- a/hw/ide.c
+++ b/hw/ide.c
@@ -1465,12 +1465,12 @@ static void ide_atapi_cmd(IDEState *s)
         break;
     case GPCMD_SEEK:
         {
-            int lba;
-            int64_t total_sectors;
+            unsigned int lba;
+            uint64_t total_sectors;
 
             bdrv_get_geometry(s->bs, &total_sectors);
             total_sectors >>= 2;
-            if (total_sectors <= 0) {
+            if (total_sectors == 0) {
                 ide_atapi_cmd_error(s, SENSE_NOT_READY,
                                     ASC_MEDIUM_NOT_PRESENT);
                 break;
@@ -1516,11 +1516,11 @@ static void ide_atapi_cmd(IDEState *s)
     case GPCMD_READ_TOC_PMA_ATIP:
         {
             int format, msf, start_track, len;
-            int64_t total_sectors;
+            uint64_t total_sectors;
 
             bdrv_get_geometry(s->bs, &total_sectors);
             total_sectors >>= 2;
-            if (total_sectors <= 0) {
+            if (total_sectors == 0) {
                 ide_atapi_cmd_error(s, SENSE_NOT_READY,
                                     ASC_MEDIUM_NOT_PRESENT);
                 break;
@@ -1560,11 +1560,11 @@ static void ide_atapi_cmd(IDEState *s)
         break;
     case GPCMD_READ_CDVD_CAPACITY:
         {
-            int64_t total_sectors;
+            uint64_t total_sectors;
 
             bdrv_get_geometry(s->bs, &total_sectors);
             total_sectors >>= 2;
-            if (total_sectors <= 0) {
+            if (total_sectors == 0) {
                 ide_atapi_cmd_error(s, SENSE_NOT_READY,
                                     ASC_MEDIUM_NOT_PRESENT);
                 break;
@@ -1580,7 +1580,7 @@ static void ide_atapi_cmd(IDEState *s)
             int media = packet[1];
             int layer = packet[6];
             int format = packet[2];
-            int64_t total_sectors;
+            uint64_t total_sectors;
 
             if (media != 0 || layer != 0)
             {
@@ -1592,6 +1592,11 @@ static void ide_atapi_cmd(IDEState *s)
                 case 0:
                     bdrv_get_geometry(s->bs, &total_sectors);
                     total_sectors >>= 2;
+                    if (total_sectors == 0) {
+                        ide_atapi_cmd_error(s, SENSE_NOT_READY,
+                                            ASC_MEDIUM_NOT_PRESENT);
+                        break;
+                    }
 
                     memset(buf, 0, 2052);
 
@@ -1636,7 +1641,7 @@ static void ide_atapi_cmd(IDEState *s)
         break;
     case GPCMD_GET_CONFIGURATION:
         {
-            int64_t total_sectors;
+            uint64_t total_sectors;
 
             /* only feature 0 is supported */
             if (packet[2] != 0 || packet[3] != 0) {
@@ -1721,7 +1726,7 @@ static void ide_cfata_metadata_write(IDEState *s)
 static void cdrom_change_cb(void *opaque)
 {
     IDEState *s = opaque;
-    int64_t nb_sectors;
+    uint64_t nb_sectors;
 
     /* XXX: send interrupt too */
     bdrv_get_geometry(s->bs, &nb_sectors);
@@ -2417,7 +2422,7 @@ static void ide_init2(IDEState *ide_state,
     IDEState *s;
     static int drive_serial = 1;
     int i, cylinders, heads, secs, translation, lba_detected = 0;
-    int64_t nb_sectors;
+    uint64_t nb_sectors;
 
     for(i = 0; i < 2; i++) {
         s = ide_state + i;