From: Asai Thambi S P <asamymuthupa@micron.com>
Date: Wed, 30 May 2012 01:41:47 +0000 (-0700)
Subject: mtip32xx: Change HDIO_GET_IDENTITY to return stored data
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=971890f25834e1e81ccb97b9413d0c2852d49208;p=openwrt%2Fstaging%2Fblogic.git

mtip32xx: Change HDIO_GET_IDENTITY to return stored data

For the ioctl command HDIO_GET_IDENTITY, return the stored copy of IDENTIFY
DATA instead of sending the command to the device - similar to libata.

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index 4b057a7312d7..73d7caa3cae1 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -2295,13 +2295,12 @@ static int mtip_hw_ioctl(struct driver_data *dd, unsigned int cmd,
 {
 	switch (cmd) {
 	case HDIO_GET_IDENTITY:
-		if (mtip_get_identify(dd->port, (void __user *) arg) < 0) {
-			dev_warn(&dd->pdev->dev,
-				"Unable to read identity\n");
-			return -EIO;
-		}
-
+	{
+		if (copy_to_user((void __user *)arg, dd->port->identify,
+						sizeof(u16) * ATA_ID_WORDS))
+			return -EFAULT;
 		break;
+	}
 	case HDIO_DRIVE_CMD:
 	{
 		u8 drive_command[4];