From: Lior David Date: Fri, 20 Jan 2017 11:49:48 +0000 (+0200) Subject: wil6210: missing reinit_completion in wmi_call X-Git-Tag: v4.14-rc1~1463^2~264^2^2~10 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4d4c4dc324b4444d40e9164834044feebaf2d72d;p=platform%2Fkernel%2Flinux-rpi.git wil6210: missing reinit_completion in wmi_call The code in wmi_call uses the wil->wmi_call completion structure to wait for a reply. In some scenarios, complete was called twice on the completion structure. This happened mainly with a disconnect event which can arrive both unsolicited and as a reply to a disconnect request. In this case the completion structure was left marked as "done" and the next wmi_call returned immediately with a corrupted reply buffer. This caused unexpected results including crashes. Fix this by adding the missing call to reinit_completion. Signed-off-by: Lior David Signed-off-by: Maya Erez Signed-off-by: Kalle Valo --- diff --git a/drivers/net/wireless/ath/wil6210/wmi.c b/drivers/net/wireless/ath/wil6210/wmi.c index 0137ac5..d30b3fc 100644 --- a/drivers/net/wireless/ath/wil6210/wmi.c +++ b/drivers/net/wireless/ath/wil6210/wmi.c @@ -957,6 +957,7 @@ int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len, wil->reply_id = reply_id; wil->reply_buf = reply; wil->reply_size = reply_size; + reinit_completion(&wil->wmi_call); spin_unlock(&wil->wmi_ev_lock); rc = __wmi_send(wil, cmdid, buf, len);