| Message ID | 1415944282-1827-1-git-send-email-haokexin@gmail.com (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | Scott Wood |
| Headers | show |
diff --git a/arch/powerpc/sysdev/fsl_msi.c b/arch/powerpc/sysdev/fsl_msi.c index a5a6c24577fe..5997c5378c84 100644 --- a/arch/powerpc/sysdev/fsl_msi.c +++ b/arch/powerpc/sysdev/fsl_msi.c @@ -360,7 +360,7 @@ static int fsl_msi_setup_hwirq(struct fsl_msi *msi, struct platform_device *dev, cascade_data->virq = virt_msir; msi->cascade_array[irq_index] = cascade_data; - ret = request_irq(virt_msir, fsl_msi_cascade, 0, + ret = request_irq(virt_msir, fsl_msi_cascade, IRQF_NO_THREAD, "fsl-msi-cascade", cascade_data); if (ret) { dev_err(&dev->dev, "failed to request_irq(%d), ret = %d\n",
The commit 543c043cbae7 ("powerpc/fsl_msi: change the irq handler from chained to normal") changes the msi cascade handler from chained to normal. Since cascade handler must run in hard interrupt context, this will cause kernel panic if we force threading of all the interrupt handler via kernel command parameter 'threadirqs'. So mark the irq handler IRQF_NO_THREAD explicitly. Signed-off-by: Kevin Hao <haokexin@gmail.com> --- arch/powerpc/sysdev/fsl_msi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)