[PATCH 09/12] vhost-net: use sizeof(*featurep) instead of sizeof(u64)

From: xiongweimin <[email protected]>

Use sizeof(*featurep) instead of sizeof(u64) for better type safety
and consistency with kernel coding style. While sizeof(u64) equals
sizeof(*featurep) on all supported platforms, using sizeof(*featurep)
makes the code more maintainable.

Signed-off-by: Weimin Xiong <[email protected]>
Co-authored-by: Cursor <[email protected]>
---
 drivers/vhost/net.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index c6854cba5..94028598f 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -1777,14 +1777,14 @@ static long vhost_net_ioctl(struct file *f, unsigned int ioctl,
 			return -EFAULT;
 
 		/* Copy the net features, up to the user-provided buffer size */
-		argp += sizeof(u64);
+		argp += sizeof(*featurep);
 		copied = min(count, (u64)VIRTIO_FEATURES_U64S);
 		if (copy_to_user(argp, vhost_net_features,
-				 copied * sizeof(u64)))
+				 copied * sizeof(*featurep)))
 			return -EFAULT;
 
 		/* Zero the trailing space provided by user-space, if any */
-		if (clear_user(argp, size_mul(count - copied, sizeof(u64))))
+		if (clear_user(argp, size_mul(count - copied, sizeof(*featurep))))
 			return -EFAULT;
 		return 0;
 	case VHOST_SET_FEATURES_ARRAY:
@@ -1792,9 +1792,9 @@ static long vhost_net_ioctl(struct file *f, unsigned int ioctl,
 			return -EFAULT;
 
 		virtio_features_zero(all_features);
-		argp += sizeof(u64);
+		argp += sizeof(*featurep);
 		copied = min(count, (u64)VIRTIO_FEATURES_U64S);
-		if (copy_from_user(all_features, argp, copied * sizeof(u64)))
+		if (copy_from_user(all_features, argp, copied * sizeof(*featurep)))
 			return -EFAULT;
 
 		/*
-- 
2.43.0