From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
Date: Sun, 21 Aug 2016 10:39:04 +0200
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 <elfring@xxxxxxxxxxxxxxxxxxxxx>
---
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 c1ed25a..9a2fe4e 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) {
--
2.9.3
--
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