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authorKevin Hao <haokexin@gmail.com>2014-11-14 13:51:22 +0800
committerScott Wood <scottwood@freescale.com>2014-11-17 22:00:30 -0600
commitd7ce4377494adfaf8afb15ecf4f07d399bbf13d9 (patch)
tree5e71f83a6ce3f4f77b0f77fcb30c7d7d1fbf4c76
parent8a97577a5967c1234ccc3bc1b45e4b1a58b39ea8 (diff)
downloadop-kernel-dev-d7ce4377494adfaf8afb15ecf4f07d399bbf13d9.zip
op-kernel-dev-d7ce4377494adfaf8afb15ecf4f07d399bbf13d9.tar.gz
powerpc/fsl_msi: mark the msi cascade handler IRQF_NO_THREAD
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> Signed-off-by: Scott Wood <scottwood@freescale.com>
-rw-r--r--arch/powerpc/sysdev/fsl_msi.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/sysdev/fsl_msi.c b/arch/powerpc/sysdev/fsl_msi.c
index de40b48..da08ed0 100644
--- a/arch/powerpc/sysdev/fsl_msi.c
+++ b/arch/powerpc/sysdev/fsl_msi.c
@@ -361,7 +361,7 @@ 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",
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