Drivers: hv: vmbus: Remove the useless API vmbus_get_outgoing_channel()

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[ Upstream commit 4d3c5c6919 ]

Commit d86adf482b ("scsi: storvsc: Enable multi-queue support") removed
the usage of the API in Jan 2017, and the API is not used since then.

netvsc and storvsc have their own algorithms to determine the outgoing
channel, so this API is useless.

And the API is potentially unsafe, because it reads primary->num_sc without
any lock held. This can be risky considering the RESCIND-OFFER message.

Let's remove the API.

Cc: Long Li <longli@microsoft.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Dexuan Cui 2018-11-26 02:17:56 +00:00 • committed by Greg Kroah-Hartman

parent a79c57d111

commit e4266dff05

3 changed files with 0 additions and 62 deletions

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1

drivers/hv/channel.c

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44

drivers/hv/channel_mgmt.c

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17

include/linux/hyperv.h

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