1 files changed, 12 insertions, 2 deletions

diff --git a/drivers/ide/ide-generic.c b/drivers/ide/ide-generic.c
index f3ec02ed4492..19f63e393d18 100644
--- a/drivers/ide/ide-generic.c
+++ b/drivers/ide/ide-generic.c
@@ -90,11 +90,21 @@ static int __init ide_generic_init(void)
         int i;
 
         for (i = 0; i < MAX_HWIFS; i++) {
-                ide_hwif_t *hwif = &ide_hwifs[i];
+                ide_hwif_t *hwif;
                 unsigned long io_addr = ide_default_io_base(i);
                 hw_regs_t hw;
 
-                if (hwif->chipset == ide_unknown && io_addr) {
+                if (io_addr) {
+                        /*
+                         * Skip probing if the corresponding
+                         * slot is already occupied.
+                         */
+                        hwif = ide_find_port();
+                        if (hwif == NULL || hwif->index != i) {
+                                idx[i] = 0xff;
+                                continue;
+                        }
+
                         memset(&hw, 0, sizeof(hw));
                         ide_std_init_ports(&hw, io_addr, io_addr + 0x206);
                         hw.irq = ide_default_irq(io_addr);