From 40b503c76481aecf811a29a14a80c13b429b5e14 Mon Sep 17 00:00:00 2001 From: Arend van Spriel Date: Mon, 15 Jun 2015 22:48:39 +0200 Subject: [PATCH] brcmfmac: make brcmf_p2p_detach() call conditional During verification of error handling in brcmf_cfg80211_attach() a null pointer dereference occurred upon calling brcmf_p2p_detach() from brcmf_detach(). This should only be called when the brcmf_cfg80211_attach() has succeeded. Fixes: f7a40873d2fa ("brcmfmac: assure p2pdev is unregistered upon driver unload") Reviewed-by: Hante Meuleman Reviewed-by: Franky (Zhenhui) Lin Reviewed-by: Pieter-Paul Giesberts Signed-off-by: Arend van Spriel Signed-off-by: Kalle Valo --- drivers/net/wireless/brcm80211/brcmfmac/core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/brcm80211/brcmfmac/core.c b/drivers/net/wireless/brcm80211/brcmfmac/core.c index 866b818889e6..fe9d3fbf5fe2 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/core.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/core.c @@ -1098,7 +1098,8 @@ void brcmf_detach(struct device *dev) /* stop firmware event handling */ brcmf_fweh_detach(drvr); - brcmf_p2p_detach(&drvr->config->p2p); + if (drvr->config) + brcmf_p2p_detach(&drvr->config->p2p); brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN); -- 2.20.1