[v7,01/30] ntsync: Return the fd from NTSYNC_IOC_CREATE_SEM.

Commit Message

Elizabeth Figura Dec. 13, 2024, 7:34 p.m. UTC

Simplify the user API a bit by returning the fd as return value from the ioctl
instead of through the argument pointer.

Signed-off-by: Elizabeth Figura <[e-mail]>
---
 drivers/misc/ntsync.c       | 7 ++-----
 include/uapi/linux/ntsync.h | 3 +--
 2 files changed, 3 insertions(+), 7 deletions(-)

Patch

diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 4954553b7baa..2e7f698268c1 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -165,7 +165,6 @@  static int ntsync_obj_get_fd(struct ntsync_obj *obj)
 
 static int ntsync_create_sem(struct ntsync_device *dev, void __user *argp)
 {
-	struct ntsync_sem_args __user *user_args = argp;
 	struct ntsync_sem_args args;
 	struct ntsync_obj *sem;
 	int fd;
@@ -182,12 +181,10 @@  static int ntsync_create_sem(struct ntsync_device *dev, void __user *argp)
 	sem->u.sem.count = args.count;
 	sem->u.sem.max = args.max;
 	fd = ntsync_obj_get_fd(sem);
-	if (fd < 0) {
+	if (fd < 0)
 		kfree(sem);
-		return fd;
-	}
 
-	return put_user(fd, &user_args->sem);
+	return fd;
 }
 
 static int ntsync_char_open(struct inode *inode, struct file *file)
diff --git a/include/uapi/linux/ntsync.h b/include/uapi/linux/ntsync.h
index dcfa38fdc93c..27d8cb3dd5b7 100644
--- a/include/uapi/linux/ntsync.h
+++ b/include/uapi/linux/ntsync.h
@@ -11,12 +11,11 @@ 
 #include <linux/types.h>
 
 struct ntsync_sem_args {
-	__u32 sem;
 	__u32 count;
 	__u32 max;
 };
 
-#define NTSYNC_IOC_CREATE_SEM		_IOWR('N', 0x80, struct ntsync_sem_args)
+#define NTSYNC_IOC_CREATE_SEM		_IOW ('N', 0x80, struct ntsync_sem_args)
 
 #define NTSYNC_IOC_SEM_POST		_IOWR('N', 0x81, __u32)