From: Yi Zou Date: Fri, 1 Apr 2011 23:06:19 +0000 (-0700) Subject: [SCSI] libfcoe: clean up netdev mapping properly when the transport goes away X-Git-Tag: v3.0-rc1~383^2~78 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=69922fcd534cfc82e2d44374fa219e7c3b27c492;p=karo-tx-linux.git [SCSI] libfcoe: clean up netdev mapping properly when the transport goes away When rmmoving the underlying fcoe transport driver module by force when it's attached and in use, the correspoding netdev mapping should be cleaned up properly as well, otherwise the lookup for a given netdev for the transport would still return non NULL pointer, causing "unable to handle paging request" bug. Signed-off-by: Yi Zou Tested-by: Ross Brattain Signed-off-by: Robert Love Signed-off-by: James Bottomley --- diff --git a/drivers/scsi/fcoe/fcoe_transport.c b/drivers/scsi/fcoe/fcoe_transport.c index 7b61d00f5c43..ec0f395263c5 100644 --- a/drivers/scsi/fcoe/fcoe_transport.c +++ b/drivers/scsi/fcoe/fcoe_transport.c @@ -343,6 +343,7 @@ EXPORT_SYMBOL(fcoe_transport_attach); int fcoe_transport_detach(struct fcoe_transport *ft) { int rc = 0; + struct fcoe_netdev_mapping *nm = NULL, *tmp; mutex_lock(&ft_mutex); if (!ft->attached) { @@ -352,6 +353,19 @@ int fcoe_transport_detach(struct fcoe_transport *ft) goto out_attach; } + /* remove netdev mapping for this transport as it is going away */ + mutex_lock(&fn_mutex); + list_for_each_entry_safe(nm, tmp, &fcoe_netdevs, list) { + if (nm->ft == ft) { + LIBFCOE_TRANSPORT_DBG("transport %s going away, " + "remove its netdev mapping for %s\n", + ft->name, nm->netdev->name); + list_del(&nm->list); + kfree(nm); + } + } + mutex_unlock(&fn_mutex); + list_del(&ft->list); ft->attached = false; LIBFCOE_TRANSPORT_DBG("detaching transport %s\n", ft->name);