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| author | Michael S. Tsirkin <mst@redhat.com> | 2020-08-05 00:51:35 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2020-08-05 18:08:41 +0300 |
| commit | 805769d7c0ddc4dd07a35f81c8b7a0a20f90dd05 (patch) | |
| tree | b59ba039efa749aad78a53d7ae678174484e9070 /drivers/virtio | |
| parent | 035ce4210be1257dd417785ff7818b5c0f2205fb (diff) | |
| download | linux-805769d7c0ddc4dd07a35f81c8b7a0a20f90dd05.tar.xz | |
virtio_balloon: use LE config space accesses
Balloon is LE, it's cleaner to access it as such directly.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/virtio')
| -rw-r--r-- | drivers/virtio/virtio_balloon.c | 26 |
1 files changed, 9 insertions, 17 deletions
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index 8bc1704ffdf3..31cc97f2f515 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -398,12 +398,9 @@ static inline s64 towards_target(struct virtio_balloon *vb) s64 target; u32 num_pages; - virtio_cread(vb->vdev, struct virtio_balloon_config, num_pages, - &num_pages); - /* Legacy balloon config space is LE, unlike all other devices. */ - if (!virtio_has_feature(vb->vdev, VIRTIO_F_VERSION_1)) - num_pages = le32_to_cpu((__force __le32)num_pages); + virtio_cread_le(vb->vdev, struct virtio_balloon_config, num_pages, + &num_pages); target = num_pages; return target - vb->num_pages; @@ -462,11 +459,8 @@ static void update_balloon_size(struct virtio_balloon *vb) u32 actual = vb->num_pages; /* Legacy balloon config space is LE, unlike all other devices. */ - if (!virtio_has_feature(vb->vdev, VIRTIO_F_VERSION_1)) - actual = (__force u32)cpu_to_le32(actual); - - virtio_cwrite(vb->vdev, struct virtio_balloon_config, actual, - &actual); + virtio_cwrite_le(vb->vdev, struct virtio_balloon_config, actual, + &actual); } static void update_balloon_stats_func(struct work_struct *work) @@ -579,12 +573,10 @@ static u32 virtio_balloon_cmd_id_received(struct virtio_balloon *vb) { if (test_and_clear_bit(VIRTIO_BALLOON_CONFIG_READ_CMD_ID, &vb->config_read_bitmap)) { - virtio_cread(vb->vdev, struct virtio_balloon_config, - free_page_hint_cmd_id, - &vb->cmd_id_received_cache); /* Legacy balloon config space is LE, unlike all other devices. */ - if (!virtio_has_feature(vb->vdev, VIRTIO_F_VERSION_1)) - vb->cmd_id_received_cache = le32_to_cpu((__force __le32)vb->cmd_id_received_cache); + virtio_cread_le(vb->vdev, struct virtio_balloon_config, + free_page_hint_cmd_id, + &vb->cmd_id_received_cache); } return vb->cmd_id_received_cache; @@ -987,8 +979,8 @@ static int virtballoon_probe(struct virtio_device *vdev) if (!want_init_on_free()) memset(&poison_val, PAGE_POISON, sizeof(poison_val)); - virtio_cwrite(vb->vdev, struct virtio_balloon_config, - poison_val, &poison_val); + virtio_cwrite_le(vb->vdev, struct virtio_balloon_config, + poison_val, &poison_val); } vb->pr_dev_info.report = virtballoon_free_page_report; |