linux-kernel - [PATCH] Revert "virtio: reject shm region if length is zero"

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Message-ID: <20250807124145.81816-1-igor.torrente@collabora.com>
Date: Thu,  7 Aug 2025 09:41:45 -0300
From: Igor Torrente <igor.torrente@...labora.com>
To: mst@...hat.com
Cc: sami.md.ko@...il.com,
	virtualization@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	eperezma@...hat.com,
	xuanzhuo@...ux.alibaba.com,
	jasowang@...hat.com,
	dmitry.osipenko@...labora.com,
	Igor Torrente <igor.torrente@...labora.com>
Subject: [PATCH] Revert "virtio: reject shm region if length is zero"

This reverts commit 206cc44588f72b49ad4d7e21a7472ab2a72a83df.

Signed-off-by: Igor Torrente <igor.torrente@...labora.com>
---
 include/linux/virtio_config.h | 2 --
 1 file changed, 2 deletions(-)

diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h
index b3e1d30c765b..169c7d367fac 100644
--- a/include/linux/virtio_config.h
+++ b/include/linux/virtio_config.h
@@ -329,8 +329,6 @@ static inline
 bool virtio_get_shm_region(struct virtio_device *vdev,
 			   struct virtio_shm_region *region, u8 id)
 {
-	if (!region->len)
-		return false;
 	if (!vdev->config->get_shm_region)
 		return false;
 	return vdev->config->get_shm_region(vdev, region, id);
-- 
2.49.0