openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

powerpc/fsl_msi: mark the msi cascade handler IRQF_NO_THREAD 

The commit 543c043cba ("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>
This commit is contained in:
Kevin Hao 2014-11-14 13:51:22 +08:00 committed by Scott Wood
parent 8a97577a59
commit d7ce437749
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/powerpc/sysdev/fsl_msi.c
View File

@ -361,7 +361,7 @@ static int fsl_msi_setup_hwirq(struct fsl_msi *msi, struct platform_device *dev,
cascade_data->virq = virt_msir; cascade_data->virq = virt_msir;
msi->cascade_array[irq_index] = cascade_data; 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); "fsl-msi-cascade", cascade_data);
if (ret) { if (ret) {
dev_err(&dev->dev, "failed to request_irq(%d), ret = %d\n", dev_err(&dev->dev, "failed to request_irq(%d), ret = %d\n",