fastboot: Make libata initialization even more async
As suggested by Linus: Don't do the libata init in 2 separate
steps with a global sync inbetween, but do it as one async step,
with a local sync before registering the device.
This cuts the boottime on my machine with 2 sata controllers down
significantly, and it seems to work. Would be nice if the libata
folks take a good look at this patch though..
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 7d3ae6a..f178a45 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -5951,6 +5951,12 @@
*/
}
}
+
+ /* in order to keep device order, we need to synchronize at this point */
+ async_synchronize_cookie(cookie);
+
+ ata_scsi_scan_host(ap, 1);
+
}
/**
* ata_host_register - register initialized ATA host
@@ -6033,15 +6039,7 @@
struct ata_port *ap = host->ports[i];
async_schedule(async_port_probe, ap);
}
- async_synchronize_full();
- /* probes are done, now scan each port's disk(s) */
- DPRINTK("host probe begin\n");
- for (i = 0; i < host->n_ports; i++) {
- struct ata_port *ap = host->ports[i];
-
- ata_scsi_scan_host(ap, 1);
- }
- DPRINTK("host probe end\n");
+ DPRINTK("probe end\n");
return 0;
}