From 9a49290919e1787ced66dcca055712338a9ee888 Mon Sep 17 00:00:00 2001
From: Geliang Tang <geliangtang@gmail.com>
Date: Sat, 6 May 2017 23:42:19 +0800
Subject: [PATCH] wil6210: use memdup_user
Git-commit: 9a49290919e1787ced66dcca055712338a9ee888
Patch-mainline: v4.13-rc1
References: FATE#326906
Use memdup_user() helper instead of open-coding to simplify the code.
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/net/wireless/ath/wil6210/debugfs.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/drivers/net/wireless/ath/wil6210/debugfs.c b/drivers/net/wireless/ath/wil6210/debugfs.c
index 5648ebbd0e16..5b0f9fc66bb6 100644
--- a/drivers/net/wireless/ath/wil6210/debugfs.c
+++ b/drivers/net/wireless/ath/wil6210/debugfs.c
@@ -795,15 +795,11 @@ static ssize_t wil_write_file_txmgmt(struct file *file, const char __user *buf,
struct wireless_dev *wdev = wil_to_wdev(wil);
struct cfg80211_mgmt_tx_params params;
int rc;
- void *frame = kmalloc(len, GFP_KERNEL);
+ void *frame;
- if (!frame)
- return -ENOMEM;
-
- if (copy_from_user(frame, buf, len)) {
- kfree(frame);
- return -EIO;
- }
+ frame = memdup_user(buf, len);
+ if (IS_ERR(frame))
+ return PTR_ERR(frame);
params.buf = frame;
params.len = len;
--
2.19.2