Commit 9ab877a6 authored Apr 16, 2018 by Stephen Hemminger Committed by Greg Kroah-Hartman Apr 23, 2018

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: 37b96a49 ("uio_hv_generic: support sub-channels")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 6e3d66b8

drivers/uio/uio_hv_generic.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -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;

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