From 38272d20b9e20f6c0e9a5f138dd1cb8ecdf45962 Mon Sep 17 00:00:00 2001 From: Teodora Baluta Date: Fri, 25 Oct 2013 11:27:09 +0300 Subject: [PATCH] staging: rtl8192u: use memdup_user to simplify code Use memdup_user rather than duplicating its implementation. Fix the following coccinelle warnings: drivers/staging/rtl8192u/r8192U_core.c:3792:7-14: WARNING opportunity for memdup_user drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c:3153:9-16: WARNING opportunity for memdup_user Signed-off-by: Teodora Baluta Signed-off-by: Greg Kroah-Hartman --- .../staging/rtl8192u/ieee80211/ieee80211_softmac.c | 11 +++-------- drivers/staging/rtl8192u/r8192U_core.c | 11 +++-------- 2 files changed, 6 insertions(+), 16 deletions(-) diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c index 5fd696926ee3..662c7e41cd5c 100644 --- a/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c +++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c @@ -3150,14 +3150,9 @@ int ieee80211_wpa_supplicant_ioctl(struct ieee80211_device *ieee, struct iw_poin goto out; } - param = kmalloc(p->length, GFP_KERNEL); - if (param == NULL){ - ret = -ENOMEM; - goto out; - } - if (copy_from_user(param, p->pointer, p->length)) { - kfree(param); - ret = -EFAULT; + param = memdup_user(p->pointer, p->length); + if (IS_ERR(param)) { + ret = PTR_ERR(param); goto out; } diff --git a/drivers/staging/rtl8192u/r8192U_core.c b/drivers/staging/rtl8192u/r8192U_core.c index 63a4cdf1dc04..c2bcbe230ed3 100644 --- a/drivers/staging/rtl8192u/r8192U_core.c +++ b/drivers/staging/rtl8192u/r8192U_core.c @@ -3789,14 +3789,9 @@ int rtl8192_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) goto out; } - ipw = kmalloc(p->length, GFP_KERNEL); - if (ipw == NULL) { - ret = -ENOMEM; - goto out; - } - if (copy_from_user(ipw, p->pointer, p->length)) { - kfree(ipw); - ret = -EFAULT; + ipw = memdup_user(p->pointer, p->length); + if (IS_ERR(ipw)) { + ret = PTR_ERR(ipw); goto out; } -- 2.34.1