diff options
| author | Vincent Whitchurch <vincent.whitchurch@axis.com> | 2019-01-16 17:32:51 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-22 11:43:17 +0100 |
| commit | 8216e7e367043182fe121b6dec5e7dbe9d3231cd (patch) | |
| tree | fa4335c33f978ce8096647d9b11eb787d7c68873 /drivers | |
| parent | vop: vringh: Do not crash if no DMA channel (diff) | |
| download | linux-8216e7e367043182fe121b6dec5e7dbe9d3231cd.tar.xz linux-8216e7e367043182fe121b6dec5e7dbe9d3231cd.zip | |
vop: Fix handling of >32 feature bits
This is needed, for example, for VIRTIO_F_IOMMU_PLATFORM.
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/misc/mic/vop/vop_main.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/misc/mic/vop/vop_main.c b/drivers/misc/mic/vop/vop_main.c index 1a9b410f4190..47a096ddc6fe 100644 --- a/drivers/misc/mic/vop/vop_main.c +++ b/drivers/misc/mic/vop/vop_main.c @@ -117,7 +117,7 @@ _vop_total_desc_size(struct mic_device_desc __iomem *desc) static u64 vop_get_features(struct virtio_device *vdev) { unsigned int i, bits; - u32 features = 0; + u64 features = 0; struct mic_device_desc __iomem *desc = to_vopvdev(vdev)->desc; u8 __iomem *in_features = _vop_vq_features(desc); int feature_len = ioread8(&desc->feature_len); @@ -125,7 +125,7 @@ static u64 vop_get_features(struct virtio_device *vdev) bits = min_t(unsigned, feature_len, sizeof(vdev->features)) * 8; for (i = 0; i < bits; i++) if (ioread8(&in_features[i / 8]) & (BIT(i % 8))) - features |= BIT(i); + features |= BIT_ULL(i); return features; } |