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Date: Thu, 27 Nov 2014 14:30:50 +0200 From: "Michael S. Tsirkin" <mst@...hat.com> To: linux-kernel@...r.kernel.org Cc: David Miller <davem@...emloft.net>, cornelia.huck@...ibm.com, rusty@....ibm.com, nab@...ux-iscsi.org, pbonzini@...hat.com, thuth@...ux.vnet.ibm.com, dahi@...ux.vnet.ibm.com, Rusty Russell <rusty@...tcorp.com.au>, virtualization@...ts.linux-foundation.org Subject: [PATCH v5 09/45] virtio_config: endian conversion for v1.0 We (ab)use virtio conversion functions for device-specific config space accesses. Based on original patches by Cornelia and Rusty. Signed-off-by: Rusty Russell <rusty@...tcorp.com.au> Signed-off-by: Cornelia Huck <cornelia.huck@...ibm.com> Signed-off-by: Michael S. Tsirkin <mst@...hat.com> --- include/linux/virtio_config.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h index b9cd689..b50c4a1 100644 --- a/include/linux/virtio_config.h +++ b/include/linux/virtio_config.h @@ -271,12 +271,13 @@ static inline u16 virtio_cread16(struct virtio_device *vdev, { u16 ret; vdev->config->get(vdev, offset, &ret, sizeof(ret)); - return ret; + return virtio16_to_cpu(vdev, (__force __virtio16)ret); } static inline void virtio_cwrite16(struct virtio_device *vdev, unsigned int offset, u16 val) { + val = (__force u16)cpu_to_virtio16(vdev, val); vdev->config->set(vdev, offset, &val, sizeof(val)); } @@ -285,12 +286,13 @@ static inline u32 virtio_cread32(struct virtio_device *vdev, { u32 ret; vdev->config->get(vdev, offset, &ret, sizeof(ret)); - return ret; + return virtio32_to_cpu(vdev, (__force __virtio32)ret); } static inline void virtio_cwrite32(struct virtio_device *vdev, unsigned int offset, u32 val) { + val = (__force u32)cpu_to_virtio32(vdev, val); vdev->config->set(vdev, offset, &val, sizeof(val)); } @@ -299,12 +301,13 @@ static inline u64 virtio_cread64(struct virtio_device *vdev, { u64 ret; vdev->config->get(vdev, offset, &ret, sizeof(ret)); - return ret; + return virtio64_to_cpu(vdev, (__force __virtio64)ret); } static inline void virtio_cwrite64(struct virtio_device *vdev, unsigned int offset, u64 val) { + val = (__force u64)cpu_to_virtio64(vdev, val); vdev->config->set(vdev, offset, &val, sizeof(val)); } -- MST -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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