Hi,
This patch can reduce the AHCI probe(thus bootup) time when there are
ports, which have no attached SATA drive.
In my development machine, only 1 of 4 ports has attached SATA disk. By
using this patch, I observed a reduced bootup time.
The patch is against libata #upstream
[ef2824073fba9def3cf122e89cc485f66dd71f70]
Thanks,
Forrest
Signed-off-by: Forrest Zhao <forrest.zhao@xxxxxxxxx>
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index 45fd71d..1c85606 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -1171,7 +1171,7 @@ static int ahci_host_init(struct ata_pro
while (j < 100) {
msleep(10);
tmp = readl(port_mmio + PORT_SCR_STAT);
- if ((tmp & 0xf) == 0x3)
+ if ((tmp & 0xf) != 0x1)
break;
j++;
}
-
: send the line "unsubscribe linux-ide" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
