This is a note to let you know that I've just added the patch titled

staging: rtl8188eu: Fix incorrect response to SIOCGIWESSID

to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: staging-rtl8188eu-fix-incorrect-response-to-siocgiwessid.patch and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Thu Feb 1 13:45:42 CET 2018

From: Larry Finger Larry.Finger@lwfinger.net Date: Sat, 25 Nov 2017 13:32:38 -0600 Subject: staging: rtl8188eu: Fix incorrect response to SIOCGIWESSID

From: Larry Finger Larry.Finger@lwfinger.net

[ Upstream commit b77992d2df9e47144354d1b25328b180afa33442 ]

When not associated with an AP, wifi device drivers should respond to the SIOCGIWESSID ioctl with a zero-length string for the SSID, which is the behavior expected by dhcpcd.

Currently, this driver returns an error code (-1) from the ioctl call, which causes dhcpcd to assume that the device is not a wireless interface and therefore it fails to work correctly with it thereafter.

This problem was reported and tested at https://github.com/lwfinger/rtl8188eu/issues/234.

Signed-off-by: Larry Finger Larry.Finger@lwfinger.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/staging/rtl8188eu/os_dep/ioctl_linux.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-)

--- a/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c +++ b/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c @@ -1395,19 +1395,13 @@ static int rtw_wx_get_essid(struct net_d if ((check_fwstate(pmlmepriv, _FW_LINKED)) || (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE))) { len = pcur_bss->Ssid.SsidLength; - - wrqu->essid.length = len; - memcpy(extra, pcur_bss->Ssid.Ssid, len); - - wrqu->essid.flags = 1; } else { - ret = -1; - goto exit; + len = 0; + *extra = 0; } - -exit: - + wrqu->essid.length = len; + wrqu->essid.flags = 1;

return ret; }

Patches currently in stable-queue which might be from Larry.Finger@lwfinger.net are

queue-4.14/staging-rtl8188eu-fix-incorrect-response-to-siocgiwessid.patch