diff options
| -rw-r--r-- | drivers/block/ahci.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/block/ahci.c b/drivers/block/ahci.c index e455ba5fb..02ba02f42 100644 --- a/drivers/block/ahci.c +++ b/drivers/block/ahci.c @@ -119,6 +119,7 @@ static int ahci_host_init(struct ahci_probe_ent *probe_ent) u32 tmp, cap_save, cmd; int i, j; volatile u8 *port_mmio; + u32 port_map; debug("ahci_host_init: start\n"); @@ -160,6 +161,7 @@ static int ahci_host_init(struct ahci_probe_ent *probe_ent) #endif probe_ent->cap = readl(mmio + HOST_CAP); probe_ent->port_map = readl(mmio + HOST_PORTS_IMPL); + port_map = probe_ent->port_map; probe_ent->n_ports = (probe_ent->cap & 0x1f) + 1; debug("cap 0x%x port_map 0x%x n_ports %d\n", @@ -169,6 +171,8 @@ static int ahci_host_init(struct ahci_probe_ent *probe_ent) probe_ent->n_ports = CONFIG_SYS_SCSI_MAX_SCSI_ID; for (i = 0; i < probe_ent->n_ports; i++) { + if (!(port_map & (1 << i))) + continue; probe_ent->port[i].port_mmio = ahci_port_base((u32) mmio, i); port_mmio = (u8 *) probe_ent->port[i].port_mmio; ahci_setup_port(&probe_ent->port[i], (unsigned long)mmio, i); |