From 9a49290919e1787ced66dcca055712338a9ee888 Mon Sep 17 00:00:00 2001 From: Geliang Tang Date: Sat, 6 May 2017 23:42:19 +0800 Subject: [PATCH] wil6210: use memdup_user Use memdup_user() helper instead of open-coding to simplify the code. Signed-off-by: Geliang Tang Signed-off-by: Kalle Valo --- 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; -- 2.20.1