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authorJiang Liu <jiang.liu@linux.intel.com>2015-07-09 16:00:47 +0800
committerThomas Gleixner <tglx@linutronix.de>2015-07-22 18:37:44 +0200
commitaa48b6f708868ab9c22ca737f27a0da832bf7f08 (patch)
treeeaf8534e5415800e0a907ef7810ff7f7a37f335b /kernel/irq/msi.c
parentfc88419cfac50b05c7c1ea218b08e70c31d1b71f (diff)
genirq/MSI: Move alloc_msi_entry() from PCI into generic MSI code
Move alloc_msi_entry() from PCI MSI code into generic MSI code, so it can be reused by other generic MSI drivers. Also introduce free_msi_entry() for completeness. Suggested-by: Stuart Yoder <stuart.yoder@freescale.com>. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Reviewed-by: Yijing Wang <wangyijing@huawei.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Tony Luck <tony.luck@intel.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Grant Likely <grant.likely@linaro.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Alexander Gordeev <agordeev@redhat.com> Link: http://lkml.kernel.org/r/1436428847-8886-13-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/irq/msi.c')
-rw-r--r--kernel/irq/msi.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c
index 7bf1f1bbb7fa..7e6512b9dc1f 100644
--- a/kernel/irq/msi.c
+++ b/kernel/irq/msi.c
@@ -18,6 +18,23 @@
/* Temparory solution for building, will be removed later */
#include <linux/pci.h>
+struct msi_desc *alloc_msi_entry(struct device *dev)
+{
+ struct msi_desc *desc = kzalloc(sizeof(*desc), GFP_KERNEL);
+ if (!desc)
+ return NULL;
+
+ INIT_LIST_HEAD(&desc->list);
+ desc->dev = dev;
+
+ return desc;
+}
+
+void free_msi_entry(struct msi_desc *entry)
+{
+ kfree(entry);
+}
+
void __get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg)
{
*msg = entry->msg;