virtio_blk: don't crash, report error if virtqueue is broken.

Browse source

A bad implementation of virtio might cause us to mark the virtqueue
broken: we'll dev_err() in that case, and the device is useless, but
let's not BUG_ON().

ENOMEM or ENOSPC implies the ring is full, and we should try again
later (-ENOMEM is documented to happen, but doesn't, as we fall
through to ENOSPC).

EIO means it's broken.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

...

This commit is contained in:

Rusty Russell 2014-03-13 11:23:39 +10:30

parent a7c58146cf

commit 5261b85e58

1 changed files with 8 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

10

drivers/block/virtio_blk.c

View file