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Write interrupt ack register in virtio_disk_intr()

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Takahiro 2020-04-18 14:49:54 -07:00 committed by Frans Kaashoek
parent b557e7c32e
commit 9eff4b0871
1 changed files with 1 additions and 0 deletions
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kernel/virtio_disk.c
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@ -264,6 +264,7 @@ virtio_disk_intr()
disk.used_idx = (disk.used_idx + 1) % NUM;
}
*R(VIRTIO_MMIO_INTERRUPT_ACK) = *R(VIRTIO_MMIO_INTERRUPT_STATUS) & 0x3;
release(&disk.vdisk_lock);
}