From 078efae00ffc76381c3248006e9cf0988163488f Mon Sep 17 00:00:00 2001 From: Anish Bhatt Date: Mon, 15 Sep 2014 17:44:18 -0700 Subject: [SCSI] cxgb4i: avoid holding mutex in interrupt context cxgbi_inet6addr_handler() can be called in interrupt context, so use rcu protected list while finding netdev. This is observed as a scheduling in atomic oops when running over ipv6. Fixes: fc8d0590d914 ("libcxgbi: Add ipv6 api to driver") Fixes: 759a0cc5a3e1 ("cxgb4i: Add ipv6 code to driver, call into libcxgbi ipv6 api") Signed-off-by: Anish Bhatt Signed-off-by: Karen Xie Signed-off-by: Christoph Hellwig Signed-off-by: James Bottomley --- drivers/scsi/cxgbi/libcxgbi.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/scsi/cxgbi/libcxgbi.h') diff --git a/drivers/scsi/cxgbi/libcxgbi.h b/drivers/scsi/cxgbi/libcxgbi.h index b3e6e7541cc5..1d98fad6a0ab 100644 --- a/drivers/scsi/cxgbi/libcxgbi.h +++ b/drivers/scsi/cxgbi/libcxgbi.h @@ -527,6 +527,7 @@ struct cxgbi_ports_map { #define CXGBI_FLAG_IPV4_SET 0x10 struct cxgbi_device { struct list_head list_head; + struct list_head rcu_node; unsigned int flags; struct net_device **ports; void *lldev; @@ -709,6 +710,8 @@ void cxgbi_device_unregister(struct cxgbi_device *); void cxgbi_device_unregister_all(unsigned int flag); struct cxgbi_device *cxgbi_device_find_by_lldev(void *); struct cxgbi_device *cxgbi_device_find_by_netdev(struct net_device *, int *); +struct cxgbi_device *cxgbi_device_find_by_netdev_rcu(struct net_device *, + int *); int cxgbi_hbas_add(struct cxgbi_device *, u64, unsigned int, struct scsi_host_template *, struct scsi_transport_template *); -- cgit v1.2.3-55-g7522