From: Mika Westerberg <mika.westerberg@linux.intel.com>
To: Tejun Heo <tj@kernel.org>
Cc: Mika Westerberg <mika.westerberg@linux.intel.com>,
linux-ide@vger.kernel.org
Subject: [PATCH 2/2] ahci: Use usleep_range() in ahci_start_port()
Date: Thu, 11 Jan 2018 15:55:51 +0300 [thread overview]
Message-ID: <20180111125551.61877-2-mika.westerberg@linux.intel.com> (raw)
In-Reply-To: <20180111125551.61877-1-mika.westerberg@linux.intel.com>
Using msleep(1) may actually sleep much longer than 1 msecs (~20 msecs)
which unnecessarily slows down system startup. Avoid that and use
usleep_range() instead.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
---
drivers/ata/libahci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
index a0de7a38430c..27e7daa01ccb 100644
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
@@ -871,7 +871,7 @@ static void ahci_start_port(struct ata_port *ap)
* ports to fail the same way.
*/
if (rc == -EBUSY)
- msleep(1);
+ usleep_range(1000, 1050);
else
break;
}
--
2.15.1
next prev parent reply other threads:[~2018-01-11 12:56 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-11 12:55 [PATCH 1/2] ahci: Add Intel Cannon Lake PCH-H PCI ID Mika Westerberg
2018-01-11 12:55 ` Mika Westerberg [this message]
2018-01-11 18:11 ` [PATCH 2/2] ahci: Use usleep_range() in ahci_start_port() Tejun Heo
2018-01-11 18:22 ` Mika Westerberg
2018-01-11 18:10 ` [PATCH 1/2] ahci: Add Intel Cannon Lake PCH-H PCI ID Tejun Heo
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