When enable lockdep, seeing "possible irq lock inversion dependency detected" error. This patch fixes the issue. Signed-off-by: Wen Xiong --- drivers/scsi/ipr.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) Index: b/drivers/scsi/ipr.c =================================================================== --- a/drivers/scsi/ipr.c 2013-05-20 09:55:23.000000000 -0500 +++ b/drivers/scsi/ipr.c 2013-05-20 10:00:34.548380858 -0500 @@ -9408,7 +9408,7 @@ static int ipr_probe_ioa(struct pci_dev void __iomem *ipr_regs; int rc = PCIBIOS_SUCCESSFUL; volatile u32 mask, uproc, interrupts; - unsigned long lock_flags; + unsigned long lock_flags, driver_lock_flags; ENTER; @@ -9631,9 +9631,9 @@ static int ipr_probe_ioa(struct pci_dev } else ioa_cfg->reset = ipr_reset_start_bist; - spin_lock(&ipr_driver_lock); + spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags); list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); - spin_unlock(&ipr_driver_lock); + spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags); LEAVE; out: @@ -9716,6 +9716,7 @@ static void __ipr_remove(struct pci_dev unsigned long host_lock_flags = 0; struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); int i; + unsigned long driver_lock_flags; ENTER; spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); @@ -9739,9 +9740,9 @@ static void __ipr_remove(struct pci_dev INIT_LIST_HEAD(&ioa_cfg->used_res_q); spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); - spin_lock(&ipr_driver_lock); + spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags); list_del(&ioa_cfg->queue); - spin_unlock(&ipr_driver_lock); + spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags); if (ioa_cfg->sdt_state == ABORT_DUMP) ioa_cfg->sdt_state = WAIT_FOR_DUMP; @@ -10007,12 +10008,12 @@ static int ipr_halt(struct notifier_bloc { struct ipr_cmnd *ipr_cmd; struct ipr_ioa_cfg *ioa_cfg; - unsigned long flags = 0; + unsigned long flags = 0, driver_lock_flags; if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF) return NOTIFY_DONE; - spin_lock(&ipr_driver_lock); + spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags); list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) { spin_lock_irqsave(ioa_cfg->host->host_lock, flags); @@ -10030,7 +10031,7 @@ static int ipr_halt(struct notifier_bloc ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); } - spin_unlock(&ipr_driver_lock); + spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags); return NOTIFY_OK; } -- -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html