git: 086cfe4df8ab - main - linuxkpi: Add spin_trylock_irqsave() macro

[Neel Chauhan]

The branch main has been updated by nc (ports committer):

URL: https://cgit.FreeBSD.org/src/commit/?id=086cfe4df8ab237f0cf156e95d36657250931981

commit 086cfe4df8ab237f0cf156e95d36657250931981
Author:     Neel Chauhan <nc at FreeBSD.org>
AuthorDate: 2021-07-15 14:52:42 +0000
Commit:     Neel Chauhan <nc at FreeBSD.org>
CommitDate: 2021-07-15 14:52:42 +0000

    linuxkpi: Add spin_trylock_irqsave() macro
    
    This is needed by the drm-kmod 5.6 update.
    
    Reviewed by:            hselasky
    MFC after:              3 days
    Differential Revision:  https://reviews.freebsd.org/D30706
---
 sys/compat/linuxkpi/common/include/linux/spinlock.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sys/compat/linuxkpi/common/include/linux/spinlock.h b/sys/compat/linuxkpi/common/include/linux/spinlock.h
index 46b1f8b9a180..56eaecfb4cd6 100644
--- a/sys/compat/linuxkpi/common/include/linux/spinlock.h
+++ b/sys/compat/linuxkpi/common/include/linux/spinlock.h
@@ -104,6 +104,11 @@ typedef struct {
 #define	spin_trylock_irq(_l)			\
 	spin_trylock(_l)
 
+#define	spin_trylock_irqsave(_l, flags) ({	\
+	(flags) = 0;				\
+	spin_trylock(_l);			\
+})
+
 #define	spin_lock_nested(_l, _n) do {		\
 	if (SPIN_SKIP())			\
 		break;				\