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uio_hv_generic: make ring buffer attribute for primary channel 

The primary channel also needs a ring buffer attribute. This allows
application to check if kernel supports uio sub channels, and also
makes all channels use consistent API.

Fixes: 37b96a4931 ("uio_hv_generic: support sub-channels")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Stephen Hemminger 2018-04-16 11:19:25 -07:00 committed by Greg Kroah-Hartman
parent 6e3d66b80f
commit 9ab877a6cc
1 changed files with 5 additions and 0 deletions
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5
drivers/uio/uio_hv_generic.c
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@ -326,6 +326,11 @@ hv_uio_probe(struct hv_device *dev,
vmbus_set_chn_rescind_callback(dev->channel, hv_uio_rescind);
vmbus_set_sc_create_callback(dev->channel, hv_uio_new_channel);
ret = sysfs_create_bin_file(&dev->channel->kobj, &ring_buffer_bin_attr);
if (ret)
dev_notice(&dev->device,
"sysfs create ring bin file failed; %d\n", ret);
hv_set_drvdata(dev, pdata);
return 0;