[PATCH] scsi: Use vmemdup_user to replace the open code

[zhong jiang]

vmemdup_user is better than duplicating its implementation, So just
replace the open code.

Signed-off-by: zhong jiang <zhongjiang@xxxxxxxxxx>
---
 drivers/scsi/hpsa.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 58bb70b..948576a 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -6381,13 +6381,9 @@ static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp)
 		return -EINVAL;
 	if (!capable(CAP_SYS_RAWIO))
 		return -EPERM;
-	ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
-	if (!ioc) {
-		status = -ENOMEM;
-		goto cleanup1;
-	}
-	if (copy_from_user(ioc, argp, sizeof(*ioc))) {
-		status = -EFAULT;
+	ioc = vmemdup_user(argp, sizeof(*ioc));
+	if (IS_ERR(ioc)) {
+		status = PTR_ERR(ioc);
 		goto cleanup1;
 	}
 	if ((ioc->buf_size < 1) &&
-- 
1.7.12.4