qemu/hw-virtio-virtio-pmem-Replace-impossible-check-by-as.patch

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From 12eed71f72cbb5d81b14f66fde254058f121979a Mon Sep 17 00:00:00 2001
From: qihao <qihao_yewu@cmss.chinamobile.com>
Date: Wed, 25 Oct 2023 17:44:42 +0800
Subject: [PATCH] hw/virtio/virtio-pmem: Replace impossible check by assertion
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
cheery-pick from 184256d261cfc773360f14a80092ace5a716bb8f
The get_memory_region() handler is used when (un)plugging the
device, which can only occur *after* it is realized.
virtio_pmem_realize() ensure the instance can not be realized
without 'memdev'. Remove the superfluous check, replacing it
by an assertion.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Message-Id: <20231017140150.44995-2-philmd@linaro.org>
Signed-off-by: qihao_yewu <qihao_yewu@cmss.chinamobile.com>
---
hw/virtio/virtio-pmem.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/hw/virtio/virtio-pmem.c b/hw/virtio/virtio-pmem.c
index d1aeb90a31..39f3949a3b 100644
--- a/hw/virtio/virtio-pmem.c
+++ b/hw/virtio/virtio-pmem.c
@@ -149,10 +149,7 @@ static void virtio_pmem_fill_device_info(const VirtIOPMEM *pmem,
static MemoryRegion *virtio_pmem_get_memory_region(VirtIOPMEM *pmem,
Error **errp)
{
- if (!pmem->memdev) {
- error_setg(errp, "'%s' property must be set", VIRTIO_PMEM_MEMDEV_PROP);
- return NULL;
- }
+ assert(pmem->memdev);
return &pmem->memdev->mr;
}
--
2.41.0.windows.1