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| author | Stephen Hemminger <stephen@networkplumber.org> | 2018-12-10 10:18:19 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-11 14:23:17 +0100 |
| commit | 5e3c420dcca53766dec57d5bf4df8eecdb953c03 (patch) | |
| tree | b13c43f7e5eac5a068dc3f784899644da04d4d50 /drivers/uio | |
| parent | 40e020c129cfc991e8ab4736d2665351ffd1468d (diff) | |
| download | linux-5e3c420dcca53766dec57d5bf4df8eecdb953c03.tar.gz linux-5e3c420dcca53766dec57d5bf4df8eecdb953c03.tar.bz2 linux-5e3c420dcca53766dec57d5bf4df8eecdb953c03.zip | |
uio_hv_generic: set callbacks on open
This fixes the problem where uio application was unable to
use multple queues on restart. The root cause is that the callbacks
are cleared on disconnect. Change to setting up callbacks
everytime in open.
Fixes: cdfa835c6e5e ("uio_hv_generic: defer opening vmbus until first use")
Reported-by: Mohammed Gamal <mgamal@redhat.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/uio')
| -rw-r--r-- | drivers/uio/uio_hv_generic.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/uio/uio_hv_generic.c b/drivers/uio/uio_hv_generic.c index c2493d011225..3c5169eb23f5 100644 --- a/drivers/uio/uio_hv_generic.c +++ b/drivers/uio/uio_hv_generic.c @@ -204,9 +204,11 @@ hv_uio_open(struct uio_info *info, struct inode *inode) if (atomic_inc_return(&pdata->refcnt) != 1) return 0; + vmbus_set_chn_rescind_callback(dev->channel, hv_uio_rescind); + vmbus_set_sc_create_callback(dev->channel, hv_uio_new_channel); + ret = vmbus_connect_ring(dev->channel, hv_uio_channel_cb, dev->channel); - if (ret == 0) dev->channel->inbound.ring_buffer->interrupt_mask = 1; else @@ -334,9 +336,6 @@ hv_uio_probe(struct hv_device *dev, goto fail_close; } - vmbus_set_chn_rescind_callback(channel, hv_uio_rescind); - vmbus_set_sc_create_callback(channel, hv_uio_new_channel); - ret = sysfs_create_bin_file(&channel->kobj, &ring_buffer_bin_attr); if (ret) dev_notice(&dev->device, |