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| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-01-04 16:25:34 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-01-04 16:25:34 +0100 |
| commit | 7e935c7ca1e6c398f11edac5beabfc4348e3b3a4 (patch) | |
| tree | 86da864ba6341bd86b5f5450c611f918722237b2 /drivers/s390 | |
| parent | [mips] switch pvc_proc_cleanup() to remove_proc_subtree() (diff) | |
| parent | new helper: memdup_user_nul() (diff) | |
| download | linux-7e935c7ca1e6c398f11edac5beabfc4348e3b3a4.tar.xz linux-7e935c7ca1e6c398f11edac5beabfc4348e3b3a4.zip | |
Merge branch 'memdup_user_nul' into work.misc
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/crypto/ap_bus.c | 4 | ||||
| -rw-r--r-- | drivers/s390/virtio/virtio_ccw.c | 62 |
2 files changed, 40 insertions, 26 deletions
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index 61f768518a34..24ec282e15d8 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -599,8 +599,10 @@ static enum ap_wait ap_sm_read(struct ap_device *ap_dev) status = ap_sm_recv(ap_dev); switch (status.response_code) { case AP_RESPONSE_NORMAL: - if (ap_dev->queue_count > 0) + if (ap_dev->queue_count > 0) { + ap_dev->state = AP_STATE_WORKING; return AP_WAIT_AGAIN; + } ap_dev->state = AP_STATE_IDLE; return AP_WAIT_NONE; case AP_RESPONSE_NO_PENDING_REPLY: diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c index b2a1a81e6fc8..1b831598df7c 100644 --- a/drivers/s390/virtio/virtio_ccw.c +++ b/drivers/s390/virtio/virtio_ccw.c @@ -984,6 +984,36 @@ static struct virtqueue *virtio_ccw_vq_by_ind(struct virtio_ccw_device *vcdev, return vq; } +static void virtio_ccw_check_activity(struct virtio_ccw_device *vcdev, + __u32 activity) +{ + if (vcdev->curr_io & activity) { + switch (activity) { + case VIRTIO_CCW_DOING_READ_FEAT: + case VIRTIO_CCW_DOING_WRITE_FEAT: + case VIRTIO_CCW_DOING_READ_CONFIG: + case VIRTIO_CCW_DOING_WRITE_CONFIG: + case VIRTIO_CCW_DOING_WRITE_STATUS: + case VIRTIO_CCW_DOING_SET_VQ: + case VIRTIO_CCW_DOING_SET_IND: + case VIRTIO_CCW_DOING_SET_CONF_IND: + case VIRTIO_CCW_DOING_RESET: + case VIRTIO_CCW_DOING_READ_VQ_CONF: + case VIRTIO_CCW_DOING_SET_IND_ADAPTER: + case VIRTIO_CCW_DOING_SET_VIRTIO_REV: + vcdev->curr_io &= ~activity; + wake_up(&vcdev->wait_q); + break; + default: + /* don't know what to do... */ + dev_warn(&vcdev->cdev->dev, + "Suspicious activity '%08x'\n", activity); + WARN_ON(1); + break; + } + } +} + static void virtio_ccw_int_handler(struct ccw_device *cdev, unsigned long intparm, struct irb *irb) @@ -995,6 +1025,12 @@ static void virtio_ccw_int_handler(struct ccw_device *cdev, if (!vcdev) return; + if (IS_ERR(irb)) { + vcdev->err = PTR_ERR(irb); + virtio_ccw_check_activity(vcdev, activity); + /* Don't poke around indicators, something's wrong. */ + return; + } /* Check if it's a notification from the host. */ if ((intparm == 0) && (scsw_stctl(&irb->scsw) == @@ -1010,31 +1046,7 @@ static void virtio_ccw_int_handler(struct ccw_device *cdev, /* Map everything else to -EIO. */ vcdev->err = -EIO; } - if (vcdev->curr_io & activity) { - switch (activity) { - case VIRTIO_CCW_DOING_READ_FEAT: - case VIRTIO_CCW_DOING_WRITE_FEAT: - case VIRTIO_CCW_DOING_READ_CONFIG: - case VIRTIO_CCW_DOING_WRITE_CONFIG: - case VIRTIO_CCW_DOING_WRITE_STATUS: - case VIRTIO_CCW_DOING_SET_VQ: - case VIRTIO_CCW_DOING_SET_IND: - case VIRTIO_CCW_DOING_SET_CONF_IND: - case VIRTIO_CCW_DOING_RESET: - case VIRTIO_CCW_DOING_READ_VQ_CONF: - case VIRTIO_CCW_DOING_SET_IND_ADAPTER: - case VIRTIO_CCW_DOING_SET_VIRTIO_REV: - vcdev->curr_io &= ~activity; - wake_up(&vcdev->wait_q); - break; - default: - /* don't know what to do... */ - dev_warn(&cdev->dev, "Suspicious activity '%08x'\n", - activity); - WARN_ON(1); - break; - } - } + virtio_ccw_check_activity(vcdev, activity); for_each_set_bit(i, &vcdev->indicators, sizeof(vcdev->indicators) * BITS_PER_BYTE) { /* The bit clear must happen before the vring kick. */ |