staging: unisys: visorchannel: Add peek function

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According to unisys, the s_par hypervisor has a bug in which it never
triggers an interrupt.  That makes the visornic effectively a 2ms poll
loop.  In order to just have the rx thread shceduling a napi poll every
2ms, lets instead give it the chance to check the response queue for
data before we schedule.  This helper provides that functionality

Signed-off-by: Neil Horman <nhorman@redhat.com>
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Neil Horman 2015-07-31 18:56:32 -04:00 • committed by Greg Kroah-Hartman

parent fd93b80592

commit fdc792cd1b

2 changed files with 23 additions and 0 deletions

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drivers/staging/unisys/include/visorbus.h

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21

drivers/staging/unisys/visorbus/visorchannel.c

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