diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-03 13:44:38 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-03 13:44:38 +0100 |
| commit | 824adf37ee9ddf3ecba1bc245507bc5953dda268 (patch) | |
| tree | ee85366f9e2c019b58492558d8ad406df35fd260 /drivers/block | |
| parent | f2ee4759fb700b32a1bd830960fe86bf6bdfd0ab (diff) | |
| parent | c9e6606c7fe92b50a02ce51dda82586ebdf99b48 (diff) | |
Merge 5.16-rc8 into char-misc-next
We need the fixes in here as well for testing.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/xen-blkfront.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index 8e3983e456f3..286cf1afad78 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -1512,9 +1512,12 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id) unsigned long flags; struct blkfront_ring_info *rinfo = (struct blkfront_ring_info *)dev_id; struct blkfront_info *info = rinfo->dev_info; + unsigned int eoiflag = XEN_EOI_FLAG_SPURIOUS; - if (unlikely(info->connected != BLKIF_STATE_CONNECTED)) + if (unlikely(info->connected != BLKIF_STATE_CONNECTED)) { + xen_irq_lateeoi(irq, XEN_EOI_FLAG_SPURIOUS); return IRQ_HANDLED; + } spin_lock_irqsave(&rinfo->ring_lock, flags); again: @@ -1530,6 +1533,8 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id) unsigned long id; unsigned int op; + eoiflag = 0; + RING_COPY_RESPONSE(&rinfo->ring, i, &bret); id = bret.id; @@ -1646,6 +1651,8 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id) spin_unlock_irqrestore(&rinfo->ring_lock, flags); + xen_irq_lateeoi(irq, eoiflag); + return IRQ_HANDLED; err: @@ -1653,6 +1660,8 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id) spin_unlock_irqrestore(&rinfo->ring_lock, flags); + /* No EOI in order to avoid further interrupts. */ + pr_alert("%s disabled for further use\n", info->gd->disk_name); return IRQ_HANDLED; } @@ -1692,8 +1701,8 @@ static int setup_blkring(struct xenbus_device *dev, if (err) goto fail; - err = bind_evtchn_to_irqhandler(rinfo->evtchn, blkif_interrupt, 0, - "blkif", rinfo); + err = bind_evtchn_to_irqhandler_lateeoi(rinfo->evtchn, blkif_interrupt, + 0, "blkif", rinfo); if (err <= 0) { xenbus_dev_fatal(dev, err, "bind_evtchn_to_irqhandler failed"); |