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wil6210: use memdup_user 

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>
This commit is contained in:
Geliang Tang 2017-05-06 23:42:19 +08:00 committed by Kalle Valo
parent 8fed6823e0
commit 9a49290919
1 changed files with 4 additions and 8 deletions
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12
drivers/net/wireless/ath/wil6210/debugfs.c
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@ -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;