The driver may sleep under a spin lock, and the function call path is:
netxen_nic_pci_mem_access_direct (acquire the lock by spin_lock)
ioremap --> may sleep
To fix it, the lock is released before "ioremap", and the lock is
acquired again after this function.
Signed-off-by: Jia-Ju Bai <baijiaju1...@163.com>
---
drivers/net/ethernet/qlogic/netxen/netxen_nic_hw.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/qlogic/netxen/netxen_nic_hw.c
b/drivers/net/ethernet/qlogic/netxen/netxen_nic_hw.c
index a996801..5ea553e 100644
--- a/drivers/net/ethernet/qlogic/netxen/netxen_nic_hw.c
+++ b/drivers/net/ethernet/qlogic/netxen/netxen_nic_hw.c
@@ -1419,7 +1419,9 @@ static u32 netxen_nic_io_read_2M(struct netxen_adapter
*adapter,
mem_base = pci_resource_start(adapter->pdev, 0) +
(start & PAGE_MASK);
+ spin_unlock(&adapter->ahw.mem_lock);
mem_ptr = ioremap(mem_base, PAGE_SIZE);
+ spin_lock(&adapter->ahw.mem_lock);
if (mem_ptr == NULL) {
ret = -EIO;
goto unlock;
--
1.7.9.5
