diff options
| -rw-r--r-- | drivers/ata/ahci.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 65d4e968feb4..4ff3f03cf97b 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -1142,12 +1142,15 @@ static int ahci_reset_controller(struct ata_host *host) readl(mmio + HOST_CTL); /* flush */ } - /* reset must complete within 1 second, or + /* + * to perform host reset, OS should set HOST_RESET + * and poll until this bit is read to be "0". + * reset must complete within 1 second, or * the hardware should be considered fried. */ - ssleep(1); + tmp = ata_wait_register(mmio + HOST_CTL, HOST_RESET, + HOST_RESET, 10, 1000); - tmp = readl(mmio + HOST_CTL); if (tmp & HOST_RESET) { dev_printk(KERN_ERR, host->dev, "controller reset failed (0x%x)\n", tmp); |