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| author | Paolo Bonzini <pbonzini@redhat.com> | 2021-10-31 02:28:48 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-10-31 02:28:48 -0400 |
| commit | 4e3386843325299df13069a1c94e27237b12be51 (patch) | |
| tree | b1cf4c009b01eee0d017e3c01acc7a7495adcc46 /drivers/fpga/dfl.c | |
| parent | e59f3e5d4521cb95233e03ece48772e9161cbfd3 (diff) | |
| parent | 5a2acbbb0179a7ffbb5440b9fa46689f619705ac (diff) | |
| download | lwn-4e3386843325299df13069a1c94e27237b12be51.tar.gz lwn-4e3386843325299df13069a1c94e27237b12be51.zip | |
Merge tag 'kvmarm-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 updates for Linux 5.16
- More progress on the protected VM front, now with the full
fixed feature set as well as the limitation of some hypercalls
after initialisation.
- Cleanup of the RAZ/WI sysreg handling, which was pointlessly
complicated
- Fixes for the vgic placement in the IPA space, together with a
bunch of selftests
- More memcg accounting of the memory allocated on behalf of a guest
- Timer and vgic selftests
- Workarounds for the Apple M1 broken vgic implementation
- KConfig cleanups
- New kvmarm.mode=none option, for those who really dislike us
Diffstat (limited to 'drivers/fpga/dfl.c')
| -rw-r--r-- | drivers/fpga/dfl.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c index c99b78ee008a..f86666cf2c6a 100644 --- a/drivers/fpga/dfl.c +++ b/drivers/fpga/dfl.c @@ -1019,16 +1019,18 @@ create_feature_instance(struct build_feature_devs_info *binfo, { unsigned int irq_base, nr_irqs; struct dfl_feature_info *finfo; + u8 revision = 0; int ret; - u8 revision; u64 v; - v = readq(binfo->ioaddr + ofst); - revision = FIELD_GET(DFH_REVISION, v); + if (fid != FEATURE_ID_AFU) { + v = readq(binfo->ioaddr + ofst); + revision = FIELD_GET(DFH_REVISION, v); - /* read feature size and id if inputs are invalid */ - size = size ? size : feature_size(v); - fid = fid ? fid : feature_id(v); + /* read feature size and id if inputs are invalid */ + size = size ? size : feature_size(v); + fid = fid ? fid : feature_id(v); + } if (binfo->len - ofst < size) return -EINVAL; |