diff options
| author | Arend van Spriel <arend@broadcom.com> | 2015-08-26 22:15:04 +0200 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2015-09-29 09:28:52 +0200 |
| commit | 95ef12394a4d002c7ed3bcbed224f3391792a02b (patch) | |
| tree | 9a6d1b39b10586c7272d2a2c7020d2aa359447f3 /drivers | |
| parent | brcmfmac: change prototype for brcmf_fws_hdrpull() (diff) | |
| download | linux-95ef12394a4d002c7ed3bcbed224f3391792a02b.tar.xz linux-95ef12394a4d002c7ed3bcbed224f3391792a02b.zip | |
brcmfmac: introduce brcmf_net_detach() function
In case of error during brcmf_bus_start() the network interfaces were
freed using free_netdev(). However, the interfaces may have additional
memory allocated which is not freed. The netdev has destructor set to
brcmf_cfg80211_free_netdev() which frees the additional memory if
allocated and call free_netdev(). The brcmf_net_detach() either calls
brcmf_cfg80211_free_netdev() directly or uses unregister_netdev() when
struct net_device::reg_state indicates the netdev was registered.
Reported-by: Daniel (Deognyoun) Kim <dekim@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c | 3 | ||||
| -rw-r--r-- | drivers/net/wireless/brcm80211/brcmfmac/core.c | 21 |
2 files changed, 15 insertions, 9 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c index cee9ff46626e..600098dd197c 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c @@ -4747,7 +4747,8 @@ void brcmf_cfg80211_free_netdev(struct net_device *ndev) ifp = netdev_priv(ndev); vif = ifp->vif; - brcmf_free_vif(vif); + if (vif) + brcmf_free_vif(vif); free_netdev(ndev); } diff --git a/drivers/net/wireless/brcm80211/brcmfmac/core.c b/drivers/net/wireless/brcm80211/brcmfmac/core.c index 5d81b74efb66..17658b59c36c 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/core.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/core.c @@ -718,8 +718,6 @@ int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked) } brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name); - - ndev->destructor = brcmf_cfg80211_free_netdev; return 0; fail: @@ -729,6 +727,14 @@ fail: return -EBADE; } +static void brcmf_net_detach(struct net_device *ndev) +{ + if (ndev->reg_state == NETREG_REGISTERED) + unregister_netdev(ndev); + else + brcmf_cfg80211_free_netdev(ndev); +} + static int brcmf_net_p2p_open(struct net_device *ndev) { brcmf_dbg(TRACE, "Enter\n"); @@ -805,8 +811,7 @@ struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx, ifp->ndev->name); if (ifidx) { netif_stop_queue(ifp->ndev); - unregister_netdev(ifp->ndev); - free_netdev(ifp->ndev); + brcmf_net_detach(ifp->ndev); drvr->iflist[bssidx] = NULL; } else { brcmf_err("ignore IF event\n"); @@ -828,6 +833,7 @@ struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx, if (!ndev) return ERR_PTR(-ENOMEM); + ndev->destructor = brcmf_cfg80211_free_netdev; ifp = netdev_priv(ndev); ifp->ndev = ndev; /* store mapping ifidx to bssidx */ @@ -879,8 +885,7 @@ static void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx) cancel_work_sync(&ifp->setmacaddr_work); cancel_work_sync(&ifp->multicast_work); } - /* unregister will take care of freeing it */ - unregister_netdev(ifp->ndev); + brcmf_net_detach(ifp->ndev); } } @@ -1056,11 +1061,11 @@ fail: brcmf_fws_deinit(drvr); } if (drvr->iflist[0]) { - free_netdev(ifp->ndev); + brcmf_net_detach(ifp->ndev); drvr->iflist[0] = NULL; } if (p2p_ifp) { - free_netdev(p2p_ifp->ndev); + brcmf_net_detach(p2p_ifp->ndev); drvr->iflist[1] = NULL; } return ret; |