Messages in this thread Patch in this message | | | From | Jia-Ju Bai <> | Subject | [PATCH] netxen: Fix a sleep-in-atomic bug in netxen_nic_hw_read_wx_2M and netxen_nic_hw_write_wx_2M | Date | Wed, 31 May 2017 17:15:12 +0800 |
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The driver may sleep under a write spin lock, and function call path is: netxen_nic_hw_read_wx_2M (acquire the lock by write_lock_irqsave) crb_win_lock netxen_pcie_sem_lock msleep --> may sleep netxen_nic_hw_write_wx_2M (acquire the lock by write_lock_irqsave) crb_win_lock netxen_pcie_sem_lock msleep --> may sleep
To fix it, the "msleep" is replaced with "mdelay" in netxen_pcie_sem_lock.
Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com> --- drivers/net/ethernet/qlogic/netxen/netxen_nic_hw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/qlogic/netxen/netxen_nic_hw.c b/drivers/net/ethernet/qlogic/netxen/netxen_nic_hw.c index a996801..0a9da42 100644 --- a/drivers/net/ethernet/qlogic/netxen/netxen_nic_hw.c +++ b/drivers/net/ethernet/qlogic/netxen/netxen_nic_hw.c @@ -329,7 +329,7 @@ static void __iomem *pci_base_offset(struct netxen_adapter *adapter, break; if (++timeout >= NETXEN_PCIE_SEM_TIMEOUT) return -EIO; - msleep(1); + mdelay(1); } if (id_reg) -- 1.7.9.5
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