virtio: mmio: fix signature checking for BE guests

[karo-tx-linux.git] / drivers / virtio / virtio_mmio.c

diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c
index e9fdeb8619922303bbedff5747c563b5cd16423b..c600ccfd6922b8226727c516ba8a980502e05458 100644 (file)
--- a/drivers/virtio/virtio_mmio.c
+++ b/drivers/virtio/virtio_mmio.c
@@ -471,7 +471,7 @@ static int virtio_mmio_probe(struct platform_device *pdev)
 
        /* Check magic value */
        magic = readl(vm_dev->base + VIRTIO_MMIO_MAGIC_VALUE);
-       if (memcmp(&magic, "virt", 4) != 0) {
+       if (magic != ('v' | 'i' << 8 | 'r' << 16 | 't' << 24)) {
                dev_warn(&pdev->dev, "Wrong magic value 0x%08lx!\n", magic);
                return -ENODEV;
        }