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authorJiang Liu <jiang.liu@linux.intel.com>2014-11-06 17:20:18 +0300
committerThomas Gleixner <tglx@linutronix.de>2014-11-23 15:01:46 +0300
commit2cb625478f8cea0f72b565007a35e1eb7882ac3a (patch)
treeedfe2cdb021c7c9e6e4bacd75489a4d059cd1ef6 /include/linux/irq.h
parent515085ef7ee74694bc9b02bc45196452defad59a (diff)
downloadlinux-2cb625478f8cea0f72b565007a35e1eb7882ac3a.tar.xz
genirq: Add IRQ_SET_MASK_OK_DONE to support stacked irqchip
Add IRQ_SET_MASK_OK_DONE in addition to IRQ_SET_MASK_OK and IRQ_SET_MASK_OK_NOCOPY to support stacked irqchip. IRQ_SET_MASK_OK_DONE is the same as IRQ_SET_MASK_OK to irq core. To stacked irqchip, it means that ascendant irqchips have done all the work and no more handling needed in descendant irqchips. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/irq.h')
-rw-r--r--include/linux/irq.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h
index d58e58935465..566b1e541323 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -114,10 +114,14 @@ enum {
*
* IRQ_SET_MASK_OK - OK, core updates irq_data.affinity
* IRQ_SET_MASK_NOCPY - OK, chip did update irq_data.affinity
+ * IRQ_SET_MASK_OK_DONE - Same as IRQ_SET_MASK_OK for core. Special code to
+ * support stacked irqchips, which indicates skipping
+ * all descendent irqchips.
*/
enum {
IRQ_SET_MASK_OK = 0,
IRQ_SET_MASK_OK_NOCOPY,
+ IRQ_SET_MASK_OK_DONE,
};
struct msi_desc;