[PATCH v3 1/6] genirq/msi: Add cleanup guard define for msi_lock_descs()/msi_unlock_descs()

[Frank Li]

Add a cleanup DEFINE_GUARD macro for msi_lock_descs() and
msi_unlock_descs() to simplify lock and unlock operations in error path.

Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
---
 include/linux/msi.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/msi.h b/include/linux/msi.h
index b10093c4d00ea..0b6cb7f303887 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -228,6 +228,8 @@ int msi_setup_device_data(struct device *dev);
 void msi_lock_descs(struct device *dev);
 void msi_unlock_descs(struct device *dev);
 
+DEFINE_GUARD(msi_descs, struct device *, msi_lock_descs(_T), msi_unlock_descs(_T))
+
 struct msi_desc *msi_domain_first_desc(struct device *dev, unsigned int domid,
 				       enum msi_desc_filter filter);
 

-- 
2.34.1