tree f9de32ed820ec931de951dc101b73c5f0fc11ba5
parent 61ca79831ce52c23b3a130f3c2351751e00e0ac9
author Jan Beulich <JBeulich@novell.com> 1313569952 +0100
committer Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 1314375018 -0400

xen/pci: make bus notifier handler return sane values

Notifier functions are expected to return NOTIFY_* codes, not -E...
ones. In particular, since the respective hypercalls failing is not
fatal to the operation of the Dom0 kernel, it must be avoided to
return negative values here as those would make it appear as if
NOTIFY_STOP_MASK wa set, suppressing further notification calls to
other interested parties (which is also why we don't want to use
notifier_from_errno() here).

While at it, also notify the user of a failed hypercall.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
[v1: Added dev_err and the disable MSI/MSI-X call]
[v2: Removed the disable MSI/MSI-X call]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>