Messages in this thread | | | Date | Thu, 6 Sep 2018 14:00:16 +0100 | From | Wei Liu <> | Subject | Re: [PATCH] xen/manage: don't complain about an empty value in control/sysrq node |
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On Thu, Sep 06, 2018 at 01:26:08PM +0200, Vitaly Kuznetsov wrote: > When guest receives a sysrq request from the host it acknowledges it by > writing '\0' to control/sysrq xenstore node. This, however, make xenstore > watch fire again but xenbus_scanf() fails to parse empty value with "%c" > format string: > > sysrq: SysRq : Emergency Sync > Emergency Sync complete > xen:manage: Error -34 reading sysrq code in control/sysrq > > Ignore -ERANGE the same way we already ignore -ENOENT, empty value in > control/sysrq is totally legal. > > Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
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