From 709ab231f8b4417411147dd9730928ba214d5c31 Mon Sep 17 00:00:00 2001 From: Markus Elfring Date: Sun, 21 Aug 2016 10:39:04 +0200 Subject: [PATCH] scsi: megaraid_sas: Use memdup_user() rather than duplicating its implementation Reuse existing functionality from memdup_user() instead of keeping duplicate source code. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring Acked by: Sumit Saxena Signed-off-by: Martin K. Petersen --- drivers/scsi/megaraid/megaraid_sas_base.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index 2dab3dc2aa69..c87e5ef96ada 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -6711,14 +6711,9 @@ static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) unsigned long flags; u32 wait_time = MEGASAS_RESET_WAIT_TIME; - ioc = kmalloc(sizeof(*ioc), GFP_KERNEL); - if (!ioc) - return -ENOMEM; - - if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) { - error = -EFAULT; - goto out_kfree_ioc; - } + ioc = memdup_user(user_ioc, sizeof(*ioc)); + if (IS_ERR(ioc)) + return PTR_ERR(ioc); instance = megasas_lookup_instance(ioc->host_no); if (!instance) { -- 2.39.5